68464931 has 2 divisors, whose sum is σ = 68464932. Its totient is φ = 68464930.

The previous prime is 68464919. The next prime is 68464939. The reversal of 68464931 is 13946486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68464931 - 2¹⁸ = 68202787 is a prime.

It is a super-2 number, since 2×68464931² = 9374893553669522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68464939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34232465 + 34232466.

It is an arithmetic number, because the mean of its divisors is an integer number (34232466).

Almost surely, 2^68464931 is an apocalyptic number.

68464931 is a deficient number, since it is larger than the sum of its proper divisors (1).

68464931 is an equidigital number, since it uses as much as digits as its factorization.

68464931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 68464931 is about 8274.3538116278. The cubic root of 68464931 is about 409.0936373346.

The spelling of 68464931 in words is "sixty-eight million, four hundred sixty-four thousand, nine hundred thirty-one".