56631697 has 2 divisors, whose sum is σ = 56631698. Its totient is φ = 56631696.

The previous prime is 56631671. The next prime is 56631737. The reversal of 56631697 is 79613665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36192256 + 20439441 = 6016^2 + 4521^2 .

It is a cyclic number.

It is not a de Polignac number, because 56631697 - 2¹⁹ = 56107409 is a prime.

It is not a weakly prime, because it can be changed into another prime (56631667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28315848 + 28315849.

It is an arithmetic number, because the mean of its divisors is an integer number (28315849).

Almost surely, 2^56631697 is an apocalyptic number.

It is an amenable number.

56631697 is a deficient number, since it is larger than the sum of its proper divisors (1).

56631697 is an equidigital number, since it uses as much as digits as its factorization.

56631697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 56631697 is about 7525.4034443344. The cubic root of 56631697 is about 384.0194240211.

The spelling of 56631697 in words is "fifty-six million, six hundred thirty-one thousand, six hundred ninety-seven".