76668931 has 2 divisors, whose sum is σ = 76668932. Its totient is φ = 76668930.

The previous prime is 76668923. The next prime is 76668937. The reversal of 76668931 is 13986667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76668931 - 2³ = 76668923 is a prime.

It is a super-2 number, since 2×76668931² = 11756249961365522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76668937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38334465 + 38334466.

It is an arithmetic number, because the mean of its divisors is an integer number (38334466).

Almost surely, 2^76668931 is an apocalyptic number.

76668931 is a deficient number, since it is larger than the sum of its proper divisors (1).

76668931 is an equidigital number, since it uses as much as digits as its factorization.

76668931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 76668931 is about 8756.0796592996. The cubic root of 76668931 is about 424.8214816572.

The spelling of 76668931 in words is "seventy-six million, six hundred sixty-eight thousand, nine hundred thirty-one".