68568631 has 2 divisors, whose sum is σ = 68568632. Its totient is φ = 68568630.

The previous prime is 68568607. The next prime is 68568653. The reversal of 68568631 is 13686586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68568631 - 2⁷ = 68568503 is a prime.

It is a super-2 number, since 2×68568631² = 9403314314428322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68568601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34284315 + 34284316.

It is an arithmetic number, because the mean of its divisors is an integer number (34284316).

Almost surely, 2^68568631 is an apocalyptic number.

68568631 is a deficient number, since it is larger than the sum of its proper divisors (1).

68568631 is an equidigital number, since it uses as much as digits as its factorization.

68568631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 68568631 is about 8280.6177909622. The cubic root of 68568631 is about 409.3000768893.

The spelling of 68568631 in words is "sixty-eight million, five hundred sixty-eight thousand, six hundred thirty-one".