634885812 has 72 divisors (see below), whose sum is σ = 1798104672. Its totient is φ = 187185600.

The previous prime is 634885789. The next prime is 634885877. The reversal of 634885812 is 218588436.

634885812 is a `hidden beast` number, since 63 + 4 + 8 + 8 + 581 + 2 = 666.

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 23 ways as a sum of consecutive naturals, for example, 7014 + ... + 36317.

It is an arithmetic number, because the mean of its divisors is an integer number (24973676).

Almost surely, 2^634885812 is an apocalyptic number.

It is an amenable number.

634885812 is an abundant number, since it is smaller than the sum of its proper divisors (1163218860).

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

634885812 is a wasteful number, since it uses less digits than its factorization.

634885812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43389 (or 43384 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 634885812 is about 25196.9405285642. The cubic root of 634885812 is about 859.4722794508.

It can be divided in two parts, 634 and 885812, that added together give a triangular number (886446 = T₁₃₃₁).

The spelling of 634885812 in words is "six hundred thirty-four million, eight hundred eighty-five thousand, eight hundred twelve".