634094257 has 2 divisors, whose sum is σ = 634094258. Its totient is φ = 634094256.

The previous prime is 634094183. The next prime is 634094281. The reversal of 634094257 is 752490436.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517972081 + 116122176 = 22759^2 + 10776^2 .

It is a cyclic number.

It is not a de Polignac number, because 634094257 - 2¹¹ = 634092209 is a prime.

It is not a weakly prime, because it can be changed into another prime (634094957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317047128 + 317047129.

It is an arithmetic number, because the mean of its divisors is an integer number (317047129).

Almost surely, 2^634094257 is an apocalyptic number.

It is an amenable number.

634094257 is a deficient number, since it is larger than the sum of its proper divisors (1).

634094257 is an equidigital number, since it uses as much as digits as its factorization.

634094257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 634094257 is about 25181.2282663098. The cubic root of 634094257 is about 859.1149435348.

The spelling of 634094257 in words is "six hundred thirty-four million, ninety-four thousand, two hundred fifty-seven".