76656997 has 2 divisors, whose sum is σ = 76656998. Its totient is φ = 76656996.

The previous prime is 76656973. The next prime is 76657019. The reversal of 76656997 is 79965667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 7667361 = 8306^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 76656997 - 2¹⁹ = 76132709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76654997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38328498 + 38328499.

It is an arithmetic number, because the mean of its divisors is an integer number (38328499).

Almost surely, 2^76656997 is an apocalyptic number.

It is an amenable number.

76656997 is a deficient number, since it is larger than the sum of its proper divisors (1).

76656997 is an equidigital number, since it uses as much as digits as its factorization.

76656997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 55.

The square root of 76656997 is about 8755.3981634190. The cubic root of 76656997 is about 424.7994384707.

The spelling of 76656997 in words is "seventy-six million, six hundred fifty-six thousand, nine hundred ninety-seven".