634522560 has 448 divisors, whose sum is σ = 2457907200. Its totient is φ = 138485760.

The previous prime is 634522547. The next prime is 634522579. The reversal of 634522560 is 65225436.

It is a tau number, because it is divible by the number of its divisors (448).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13500457 + ... + 13500503.

It is an arithmetic number, because the mean of its divisors is an integer number (5486400).

Almost surely, 2^634522560 is an apocalyptic number.

634522560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634522560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1228953600).

634522560 is an abundant number, since it is smaller than the sum of its proper divisors (1823384640).

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

634522560 is a wasteful number, since it uses less digits than its factorization.

634522560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 634522560 is about 25189.7312411228. The cubic root of 634522560 is about 859.3083315510.

Adding to 634522560 its reverse (65225436), we get a palindrome (699747996).

The spelling of 634522560 in words is "six hundred thirty-four million, five hundred twenty-two thousand, five hundred sixty".