639300960 has 144 divisors (see below), whose sum is σ = 2198916720. Its totient is φ = 169128960.

The previous prime is 639300953. The next prime is 639301001. The reversal of 639300960 is 69003936.

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, 186946 + ... + 190334.

It is an arithmetic number, because the mean of its divisors is an integer number (15270255).

Almost surely, 2^639300960 is an apocalyptic number.

639300960 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 639300960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099458360).

639300960 is an abundant number, since it is smaller than the sum of its proper divisors (1559615760).

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

639300960 is a wasteful number, since it uses less digits than its factorization.

639300960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 639300960 is about 25284.4015155590. The cubic root of 639300960 is about 861.4600042041.

The spelling of 639300960 in words is "six hundred thirty-nine million, three hundred thousand, nine hundred sixty".