634572 has 18 divisors (see below), whose sum is σ = 1604148. Its totient is φ = 211512.

The previous prime is 634567. The next prime is 634573. The reversal of 634572 is 275436.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (634573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8778 + ... + 8849.

2⁶³⁴⁵⁷² is an apocalyptic number.

It is an amenable number.

634572 is an abundant number, since it is smaller than the sum of its proper divisors (969576).

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

634572 is a wasteful number, since it uses less digits than its factorization.

634572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17637 (or 17632 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 634572 is about 796.6002761737. The cubic root of 634572 is about 85.9330649171.

The spelling of 634572 in words is "six hundred thirty-four thousand, five hundred seventy-two".