6415689604 has 27 divisors (see below), whose sum is σ = 11636386671. Its totient is φ = 3094986720.

The previous prime is 6415689563. The next prime is 6415689611. The reversal of 6415689604 is 4069865146.

The square root of 6415689604 is 80098.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2883204 + 6412806400 = 1698^2 + 80080^2 .

It is a super-2 number, since 2×6415689604² = 82322146189747353632, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4644994 + ... + 4646374.

Almost surely, 2^6415689604 is an apocalyptic number.

6415689604 is the 80098-th square number.

It is an amenable number.

6415689604 is a deficient number, since it is larger than the sum of its proper divisors (5220697067).

6415689604 is an equidigital number, since it uses as much as digits as its factorization.

6415689604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The cubic root of 6415689604 is about 1858.1514763977.

Multiplying 6415689604 by its sum of digits (49), we get a square (314368790596 = 560686²).

The spelling of 6415689604 in words is "six billion, four hundred fifteen million, six hundred eighty-nine thousand, six hundred four".