6321499904 has 72 divisors (see below), whose sum is σ = 12776757840. Its totient is φ = 3121348608.

The previous prime is 6321499903. The next prime is 6321499949. The reversal of 6321499904 is 4099941236.

It is a super-2 number, since 2×6321499904² = 79922722072544018432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6321499903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8220032 + ... + 8220800.

It is an arithmetic number, because the mean of its divisors is an integer number (177454970).

Almost surely, 2^6321499904 is an apocalyptic number.

6321499904 is a gapful number since it is divisible by the number (64) 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 6321499904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6388378920).

6321499904 is an abundant number, since it is smaller than the sum of its proper divisors (6455257936).

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

6321499904 is a wasteful number, since it uses less digits than its factorization.

6321499904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 6321499904 is about 79507.8606428320. The cubic root of 6321499904 is about 1849.0133432756.

The spelling of 6321499904 in words is "six billion, three hundred twenty-one million, four hundred ninety-nine thousand, nine hundred four".