68856669 has 16 divisors (see below), whose sum is σ = 116583040. Its totient is φ = 39346560.

The previous prime is 68856629. The next prime is 68856679. The reversal of 68856669 is 96665886.

It is not a de Polignac number, because 68856669 - 2⁸ = 68856413 is a prime.

It is a super-2 number, since 2×68856669² = 9482481731551122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68856629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181972 + ... + 182349.

It is an arithmetic number, because the mean of its divisors is an integer number (7286440).

Almost surely, 2^68856669 is an apocalyptic number.

It is an amenable number.

68856669 is a deficient number, since it is larger than the sum of its proper divisors (47726371).

68856669 is a wasteful number, since it uses less digits than its factorization.

68856669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364337 (or 364331 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 68856669 is about 8297.9918655058. The cubic root of 68856669 is about 409.8723953481.

The spelling of 68856669 in words is "sixty-eight million, eight hundred fifty-six thousand, six hundred sixty-nine".