656058631 has 2 divisors, whose sum is σ = 656058632. Its totient is φ = 656058630.

The previous prime is 656058629. The next prime is 656058649. The reversal of 656058631 is 136850656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656058631 - 2¹ = 656058629 is a prime.

It is a super-2 number, since 2×656058631² = 860825854619188322, which contains 22 as substring.

Together with 656058629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656058031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328029315 + 328029316.

It is an arithmetic number, because the mean of its divisors is an integer number (328029316).

Almost surely, 2^656058631 is an apocalyptic number.

656058631 is a deficient number, since it is larger than the sum of its proper divisors (1).

656058631 is an equidigital number, since it uses as much as digits as its factorization.

656058631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 656058631 is about 25613.6415021371. The cubic root of 656058631 is about 868.9221826929.

The spelling of 656058631 in words is "six hundred fifty-six million, fifty-eight thousand, six hundred thirty-one".