634651344 has 120 divisors (see below), whose sum is σ = 1941518592. Its totient is φ = 192660480.

The previous prime is 634651337. The next prime is 634651363. The reversal of 634651344 is 443156436.

634651344 is a `hidden beast` number, since 63 + 46 + 513 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 634651299 and 634651308.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 71707 + ... + 80069.

Almost surely, 2^634651344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634651344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (970759296).

634651344 is an abundant number, since it is smaller than the sum of its proper divisors (1306867248).

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

634651344 is a wasteful number, since it uses less digits than its factorization.

634651344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425 (or 8416 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 634651344 is about 25192.2873911838. The cubic root of 634651344 is about 859.3664632787.

The spelling of 634651344 in words is "six hundred thirty-four million, six hundred fifty-one thousand, three hundred forty-four".