68608831 has 4 divisors (see below), whose sum is σ = 69548752. Its totient is φ = 67668912.

The previous prime is 68608823. The next prime is 68608847. The reversal of 68608831 is 13880686.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68608831 - 2³ = 68608823 is a prime.

It is a super-2 number, since 2×68608831² = 9414343382373122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68608801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469851 + ... + 469996.

It is an arithmetic number, because the mean of its divisors is an integer number (17387188).

Almost surely, 2^68608831 is an apocalyptic number.

68608831 is a deficient number, since it is larger than the sum of its proper divisors (939921).

68608831 is an equidigital number, since it uses as much as digits as its factorization.

68608831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939920.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68608831 is about 8283.0447904137. The cubic root of 68608831 is about 409.3800485829.

The spelling of 68608831 in words is "sixty-eight million, six hundred eight thousand, eight hundred thirty-one".