634534812 has 36 divisors (see below), whose sum is σ = 1620507616. Its totient is φ = 209329920.

The previous prime is 634534807. The next prime is 634534853. The reversal of 634534812 is 218435436.

634534812 is a `hidden beast` number, since 634 + 5 + 3 + 4 + 8 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87364 + ... + 94347.

Almost surely, 2^634534812 is an apocalyptic number.

It is an amenable number.

634534812 is an abundant number, since it is smaller than the sum of its proper divisors (985972804).

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

634534812 is a wasteful number, since it uses less digits than its factorization.

634534812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181818 (or 181813 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 634534812 is about 25189.9744342864. The cubic root of 634534812 is about 859.3138623120.

It can be divided in two parts, 63453 and 4812, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 634534812 in words is "six hundred thirty-four million, five hundred thirty-four thousand, eight hundred twelve".