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68544853 = 1323229247
BaseRepresentation
bin1000001010111…
…10100101010101
311202222102212021
410011132211111
5120021413403
610445053141
71461423136
oct405364525
9152872767
1068544853
1135767843
121ab571b1
131127c3b0
149163c8d
15603e8bd
hex415e955

68544853 has 8 divisors (see below), whose sum is σ = 77027328. Its totient is φ = 60520944.

The previous prime is 68544851. The next prime is 68544857. The reversal of 68544853 is 35844586.

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 68544853 - 21 = 68544851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68544851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114325 + ... + 114922.

It is an arithmetic number, because the mean of its divisors is an integer number (9628416).

Almost surely, 268544853 is an apocalyptic number.

It is an amenable number.

68544853 is a deficient number, since it is larger than the sum of its proper divisors (8482475).

68544853 is a wasteful number, since it uses less digits than its factorization.

68544853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229283.

The product of its digits is 460800, while the sum is 43.

The square root of 68544853 is about 8279.1819040289. The cubic root of 68544853 is about 409.2527595165.

The spelling of 68544853 in words is "sixty-eight million, five hundred forty-four thousand, eight hundred fifty-three".

Divisors: 1 13 23 299 229247 2980211 5272681 68544853