634466257 has 2 divisors, whose sum is σ = 634466258. Its totient is φ = 634466256.

The previous prime is 634466249. The next prime is 634466281. The reversal of 634466257 is 752664436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522762496 + 111703761 = 22864^2 + 10569^2 .

It is a cyclic number.

It is not a de Polignac number, because 634466257 - 2³ = 634466249 is a prime.

It is not a weakly prime, because it can be changed into another prime (634460257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317233128 + 317233129.

It is an arithmetic number, because the mean of its divisors is an integer number (317233129).

Almost surely, 2^634466257 is an apocalyptic number.

It is an amenable number.

634466257 is a deficient number, since it is larger than the sum of its proper divisors (1).

634466257 is an equidigital number, since it uses as much as digits as its factorization.

634466257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 43.

The square root of 634466257 is about 25188.6136379119. The cubic root of 634466257 is about 859.2829145046.

The spelling of 634466257 in words is "six hundred thirty-four million, four hundred sixty-six thousand, two hundred fifty-seven".