68831817 has 16 divisors (see below), whose sum is σ = 93235968. Its totient is φ = 45162320.

The previous prime is 68831809. The next prime is 68831843. The reversal of 68831817 is 71813886.

It is a cyclic number.

It is not a de Polignac number, because 68831817 - 2³ = 68831809 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68831857) 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, 121978 + ... + 122540.

It is an arithmetic number, because the mean of its divisors is an integer number (5827248).

Almost surely, 2^68831817 is an apocalyptic number.

It is an amenable number.

68831817 is a deficient number, since it is larger than the sum of its proper divisors (24404151).

68831817 is a wasteful number, since it uses less digits than its factorization.

68831817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its digits is 64512, while the sum is 42.

The square root of 68831817 is about 8296.4942596256. The cubic root of 68831817 is about 409.8230785347.

The spelling of 68831817 in words is "sixty-eight million, eight hundred thirty-one thousand, eight hundred seventeen".