76722957 has 10 divisors (see below), whose sum is σ = 114610958. Its totient is φ = 51148584.

The previous prime is 76722953. The next prime is 76722977. The reversal of 76722957 is 75922767.

It can be written as a sum of positive squares in only one way, i.e., 76370121 + 352836 = 8739^2 + 594^2 .

It is not a de Polignac number, because 76722957 - 2² = 76722953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76722953) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 473518 + ... + 473679.

Almost surely, 2^76722957 is an apocalyptic number.

It is an amenable number.

76722957 is a deficient number, since it is larger than the sum of its proper divisors (37888001).

76722957 is an equidigital number, since it uses as much as digits as its factorization.

76722957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947209 (or 947200 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 76722957 is about 8759.1641724539. The cubic root of 76722957 is about 424.9212439996.

The spelling of 76722957 in words is "seventy-six million, seven hundred twenty-two thousand, nine hundred fifty-seven".