76904497 has 2 divisors, whose sum is σ = 76904498. Its totient is φ = 76904496.

The previous prime is 76904473. The next prime is 76904507. The reversal of 76904497 is 79440967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61214976 + 15689521 = 7824^2 + 3961^2 .

It is an emirp because it is prime and its reverse (79440967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76904497 - 2⁷ = 76904369 is a prime.

It is not a weakly prime, because it can be changed into another prime (76904407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38452248 + 38452249.

It is an arithmetic number, because the mean of its divisors is an integer number (38452249).

Almost surely, 2^76904497 is an apocalyptic number.

It is an amenable number.

76904497 is a deficient number, since it is larger than the sum of its proper divisors (1).

76904497 is an equidigital number, since it uses as much as digits as its factorization.

76904497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 76904497 is about 8769.5209105173. The cubic root of 76904497 is about 425.2561261222.

The spelling of 76904497 in words is "seventy-six million, nine hundred four thousand, four hundred ninety-seven".