634372704 has 144 divisors (see below), whose sum is σ = 2069383680. Its totient is φ = 180576000.

The previous prime is 634372649. The next prime is 634372723. The reversal of 634372704 is 407273436.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 844329 + ... + 845079.

It is an arithmetic number, because the mean of its divisors is an integer number (14370720).

Almost surely, 2^634372704 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 634372704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034691840).

634372704 is an abundant number, since it is smaller than the sum of its proper divisors (1435010976).

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

634372704 is a wasteful number, since it uses less digits than its factorization.

634372704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The square root of 634372704 is about 25186.7565200444. The cubic root of 634372704 is about 859.2406782443.

The spelling of 634372704 in words is "six hundred thirty-four million, three hundred seventy-two thousand, seven hundred four".