634490875 has 8 divisors (see below), whose sum is σ = 791844768. Its totient is φ = 507592600.

The previous prime is 634490873. The next prime is 634490887. The reversal of 634490875 is 578094436.

It is not a de Polignac number, because 634490875 - 2¹ = 634490873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634490873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537839 + ... + 2538088.

It is an arithmetic number, because the mean of its divisors is an integer number (98980596).

Almost surely, 2^634490875 is an apocalyptic number.

634490875 is a deficient number, since it is larger than the sum of its proper divisors (157353893).

634490875 is an equidigital number, since it uses as much as digits as its factorization.

634490875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075942 (or 5075932 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 634490875 is about 25189.1023063546. The cubic root of 634490875 is about 859.2940280734.

The spelling of 634490875 in words is "six hundred thirty-four million, four hundred ninety thousand, eight hundred seventy-five".