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68361743 = 1725715647
BaseRepresentation
bin1000001001100…
…01111000001111
311202122010200102
410010301320033
5120000033433
610441121315
71460031242
oct404617017
9152563612
1068361743
113565220a
121aa8923b
1311216c48
149117259
1560054e8
hex4131e0f

68361743 has 8 divisors (see below), whose sum is σ = 72669312. Its totient is φ = 64086016.

The previous prime is 68361739. The next prime is 68361751. The reversal of 68361743 is 34716386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68361743 - 22 = 68361739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68361697 and 68361706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68361703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3455 + ... + 12192.

It is an arithmetic number, because the mean of its divisors is an integer number (9083664).

Almost surely, 268361743 is an apocalyptic number.

68361743 is a deficient number, since it is larger than the sum of its proper divisors (4307569).

68361743 is a wasteful number, since it uses less digits than its factorization.

68361743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15921.

The product of its digits is 72576, while the sum is 38.

The square root of 68361743 is about 8268.1160490162. The cubic root of 68361743 is about 408.8880100204. Note that the first 3 decimals are identical.

It can be divided in two parts, 683 and 61743, that added together give a palindrome (62426).

The spelling of 68361743 in words is "sixty-eight million, three hundred sixty-one thousand, seven hundred forty-three".

Divisors: 1 17 257 4369 15647 265999 4021279 68361743