634506144 has 24 divisors (see below), whose sum is σ = 1665578880. Its totient is φ = 211502016.

The previous prime is 634506143. The next prime is 634506161. The reversal of 634506144 is 441605436.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (634506143) 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, 3304624 + ... + 3304815.

It is an arithmetic number, because the mean of its divisors is an integer number (69399120).

Almost surely, 2^634506144 is an apocalyptic number.

It is an amenable number.

634506144 is an abundant number, since it is smaller than the sum of its proper divisors (1031072736).

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

634506144 is a wasteful number, since it uses less digits than its factorization.

634506144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609452 (or 6609444 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 634506144 is about 25189.4053919500. The cubic root of 634506144 is about 859.3009209780.

The spelling of 634506144 in words is "six hundred thirty-four million, five hundred six thousand, one hundred forty-four".