634495975 has 12 divisors (see below), whose sum is σ = 828184840. Its totient is φ = 480880800.

The previous prime is 634495921. The next prime is 634495987. The reversal of 634495975 is 579594436.

It is a happy number.

It is not a de Polignac number, because 634495975 - 2¹¹ = 634493927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667416 + ... + 668365.

Almost surely, 2^634495975 is an apocalyptic number.

634495975 is a deficient number, since it is larger than the sum of its proper divisors (193688865).

634495975 is a wasteful number, since it uses less digits than its factorization.

634495975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335810 (or 1335805 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 52.

The square root of 634495975 is about 25189.2035404060. The cubic root of 634495975 is about 859.2963303854.

The spelling of 634495975 in words is "six hundred thirty-four million, four hundred ninety-five thousand, nine hundred seventy-five".