631672414657 has 2 divisors, whose sum is σ = 631672414658. Its totient is φ = 631672414656.

The previous prime is 631672414547. The next prime is 631672414661. The reversal of 631672414657 is 756414276136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630624986161 + 1047428496 = 794119^2 + 32364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631672414657 is a prime.

It is not a weakly prime, because it can be changed into another prime (631672414357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315836207328 + 315836207329.

It is an arithmetic number, because the mean of its divisors is an integer number (315836207329).

Almost surely, 2^631672414657 is an apocalyptic number.

It is an amenable number.

631672414657 is a deficient number, since it is larger than the sum of its proper divisors (1).

631672414657 is an equidigital number, since it uses as much as digits as its factorization.

631672414657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 52.

The spelling of 631672414657 in words is "six hundred thirty-one billion, six hundred seventy-two million, four hundred fourteen thousand, six hundred fifty-seven".