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687285482361 = 33121372716421
BaseRepresentation
bin10100000000001010110…
…10000011001101111001
32102201000002212222110020
422000011122003031321
542230030040413421
61243422401041053
7100440401131662
oct12000532031571
92381002788406
10687285482361
11245526812385
12b124a626189
134ca7028211a
142539c850369
1512d27c47dc6
hexa005683379

687285482361 has 48 divisors (see below), whose sum is σ = 957475194624. Its totient is φ = 438480864000.

The previous prime is 687285482327. The next prime is 687285482393. The reversal of 687285482361 is 163284582786.

It is not a de Polignac number, because 687285482361 - 215 = 687285449593 is a prime.

It is a super-2 number, since 2×6872854823612 (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 687285482295 and 687285482304.

It is not an unprimeable number, because it can be changed into a prime (687285482761) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107033931 + ... + 107040351.

It is an arithmetic number, because the mean of its divisors is an integer number (19947399888).

Almost surely, 2687285482361 is an apocalyptic number.

It is an amenable number.

687285482361 is a deficient number, since it is larger than the sum of its proper divisors (270189712263).

687285482361 is a wasteful number, since it uses less digits than its factorization.

687285482361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6894 (or 6863 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 60.

The spelling of 687285482361 in words is "six hundred eighty-seven billion, two hundred eighty-five million, four hundred eighty-two thousand, three hundred sixty-one".

Divisors: 1 3 31 93 137 271 411 813 961 2883 4247 6421 8401 12741 19263 25203 37127 111381 131657 199051 260431 394971 597153 781293 879677 1150937 1740091 2639031 3452811 5220273 6170581 18511743 27269987 35679047 53942821 81809961 107037141 161828463 238392467 715177401 845369597 1672227451 2536108791 5016682353 7390166477 22170499431 229095160787 687285482361