634258644 has 24 divisors (see below), whose sum is σ = 1566992448. Its totient is φ = 198983040.

The previous prime is 634258637. The next prime is 634258679. The reversal of 634258644 is 446852436.

It is a super-3 number, since 3×634258644³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634258596 and 634258605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554352 + ... + 1554759.

It is an arithmetic number, because the mean of its divisors is an integer number (65291352).

Almost surely, 2^634258644 is an apocalyptic number.

It is an amenable number.

634258644 is an abundant number, since it is smaller than the sum of its proper divisors (932733804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634258644 is a wasteful number, since it uses less digits than its factorization.

634258644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109135 (or 3109133 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The square root of 634258644 is about 25184.4921330568. The cubic root of 634258644 is about 859.1891780954.

The spelling of 634258644 in words is "six hundred thirty-four million, two hundred fifty-eight thousand, six hundred forty-four".