76704431 has 2 divisors, whose sum is σ = 76704432. Its totient is φ = 76704430.

The previous prime is 76704427. The next prime is 76704443. The reversal of 76704431 is 13440767.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76704431 - 2² = 76704427 is a prime.

It is a super-2 number, since 2×76704431² = 11767139470067522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76704451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38352215 + 38352216.

It is an arithmetic number, because the mean of its divisors is an integer number (38352216).

Almost surely, 2^76704431 is an apocalyptic number.

76704431 is a deficient number, since it is larger than the sum of its proper divisors (1).

76704431 is an equidigital number, since it uses as much as digits as its factorization.

76704431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 76704431 is about 8758.1065876136. The cubic root of 76704431 is about 424.8870398753.

The spelling of 76704431 in words is "seventy-six million, seven hundred four thousand, four hundred thirty-one".