6606421504 has 20 divisors (see below), whose sum is σ = 13199940864. Its totient is φ = 3303210496.

The previous prime is 6606421489. The next prime is 6606421511. The reversal of 6606421504 is 4051246066.

It is a self number, because there is not a number n which added to its sum of digits gives 6606421504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6451072 + ... + 6452095.

Almost surely, 2^6606421504 is an apocalyptic number.

6606421504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6606421504 is a deficient number, since it is larger than the sum of its proper divisors (6593519360).

6606421504 is an equidigital number, since it uses as much as digits as its factorization.

6606421504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12903185 (or 12903169 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 6606421504 is about 81279.8960629257. The cubic root of 6606421504 is about 1876.3856072874.

The spelling of 6606421504 in words is "six billion, six hundred six million, four hundred twenty-one thousand, five hundred four".