634326564 has 24 divisors (see below), whose sum is σ = 1482401088. Its totient is φ = 211112800.

The previous prime is 634326551. The next prime is 634326569. The reversal of 634326564 is 465623436.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (634326569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33087 + ... + 48614.

It is an arithmetic number, because the mean of its divisors is an integer number (61766712).

Almost surely, 2^634326564 is an apocalyptic number.

It is an amenable number.

634326564 is an abundant number, since it is smaller than the sum of its proper divisors (848074524).

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

634326564 is a wasteful number, since it uses less digits than its factorization.

634326564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82355 (or 82353 counting only the distinct ones).

The product of its digits is 311040, while the sum is 39.

The square root of 634326564 is about 25185.8405458305. The cubic root of 634326564 is about 859.2198459450.

It can be divided in two parts, 63432 and 6564, that added together give a palindrome (69996).

The spelling of 634326564 in words is "six hundred thirty-four million, three hundred twenty-six thousand, five hundred sixty-four".