634785616 has 40 divisors (see below), whose sum is σ = 1293995304. Its totient is φ = 301271040.

The previous prime is 634785583. The next prime is 634785629. The reversal of 634785616 is 616587436.

It can be written as a sum of positive squares in 4 ways, for example, as 9985600 + 624800016 = 3160^2 + 24996^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11196 + ... + 37348.

Almost surely, 2^634785616 is an apocalyptic number.

It is an amenable number.

634785616 is an abundant number, since it is smaller than the sum of its proper divisors (659209688).

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

634785616 is a wasteful number, since it uses less digits than its factorization.

634785616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26239 (or 26233 counting only the distinct ones).

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

The square root of 634785616 is about 25194.9521928501. The cubic root of 634785616 is about 859.4270638580.

The spelling of 634785616 in words is "six hundred thirty-four million, seven hundred eighty-five thousand, six hundred sixteen".