631094657 has 2 divisors, whose sum is σ = 631094658. Its totient is φ = 631094656.

The previous prime is 631094579. The next prime is 631094663. The reversal of 631094657 is 756490136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484176016 + 146918641 = 22004^2 + 12121^2 .

It is a cyclic number.

It is not a de Polignac number, because 631094657 - 2¹² = 631090561 is a prime.

It is not a weakly prime, because it can be changed into another prime (631094687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315547328 + 315547329.

It is an arithmetic number, because the mean of its divisors is an integer number (315547329).

Almost surely, 2^631094657 is an apocalyptic number.

It is an amenable number.

631094657 is a deficient number, since it is larger than the sum of its proper divisors (1).

631094657 is an equidigital number, since it uses as much as digits as its factorization.

631094657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 631094657 is about 25121.5974213425. The cubic root of 631094657 is about 857.7581129617.

The spelling of 631094657 in words is "six hundred thirty-one million, ninety-four thousand, six hundred fifty-seven".