634645452 has 36 divisors (see below), whose sum is σ = 1722610680. Its totient is φ = 181327104.

The previous prime is 634645439. The next prime is 634645469. The reversal of 634645452 is 254546436.

It is a self number, because there is not a number n which added to its sum of digits gives 634645452.

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, 539077 + ... + 540252.

Almost surely, 2^634645452 is an apocalyptic number.

It is an amenable number.

634645452 is an abundant number, since it is smaller than the sum of its proper divisors (1087965228).

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

634645452 is a wasteful number, since it uses less digits than its factorization.

634645452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079350 (or 1079341 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

The square root of 634645452 is about 25192.1704503602. The cubic root of 634645452 is about 859.3638038643.

The spelling of 634645452 in words is "six hundred thirty-four million, six hundred forty-five thousand, four hundred fifty-two".