76976491 has 2 divisors, whose sum is σ = 76976492. Its totient is φ = 76976490.

The previous prime is 76976483. The next prime is 76976507. The reversal of 76976491 is 19467967.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76976491 - 2³ = 76976483 is a prime.

It is not a weakly prime, because it can be changed into another prime (76976401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38488245 + 38488246.

It is an arithmetic number, because the mean of its divisors is an integer number (38488246).

Almost surely, 2^76976491 is an apocalyptic number.

76976491 is a deficient number, since it is larger than the sum of its proper divisors (1).

76976491 is an equidigital number, since it uses as much as digits as its factorization.

76976491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 76976491 is about 8773.6247355355. The cubic root of 76976491 is about 425.3887856416.

The spelling of 76976491 in words is "seventy-six million, nine hundred seventy-six thousand, four hundred ninety-one".