634889536 has 28 divisors (see below), whose sum is σ = 1286670528. Its totient is φ = 310689152.

The previous prime is 634889533. The next prime is 634889543. The reversal of 634889536 is 635988436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634889533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102526 + ... + 108541.

Almost surely, 2^634889536 is an apocalyptic number.

It is an amenable number.

634889536 is an abundant number, since it is smaller than the sum of its proper divisors (651780992).

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

634889536 is a wasteful number, since it uses less digits than its factorization.

634889536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211126 (or 211116 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 52.

The square root of 634889536 is about 25197.0144263165. The cubic root of 634889536 is about 859.4739598939.

The spelling of 634889536 in words is "six hundred thirty-four million, eight hundred eighty-nine thousand, five hundred thirty-six".