629964664 has 64 divisors (see below), whose sum is σ = 1446796800. Its totient is φ = 251247744.

The previous prime is 629964659. The next prime is 629964679. The reversal of 629964664 is 466469926.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41047 + ... + 54265.

It is an arithmetic number, because the mean of its divisors is an integer number (22606200).

Almost surely, 2^629964664 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 629964664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723398400).

629964664 is an abundant number, since it is smaller than the sum of its proper divisors (816832136).

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

629964664 is a wasteful number, since it uses less digits than its factorization.

629964664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13292 (or 13288 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 52.

The square root of 629964664 is about 25099.0968761826. The cubic root of 629964664 is about 857.2458603094.

The spelling of 629964664 in words is "six hundred twenty-nine million, nine hundred sixty-four thousand, six hundred sixty-four".