6606637672 has 16 divisors (see below), whose sum is σ = 12389394240. Its totient is φ = 3302799216.

The previous prime is 6606637657. The next prime is 6606637717. The reversal of 6606637672 is 2767366066.

It is a happy number.

It is a super-2 number, since 2×6606637672² = 87295322658179159168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7978 + ... + 115225.

It is an arithmetic number, because the mean of its divisors is an integer number (774337140).

Almost surely, 2^6606637672 is an apocalyptic number.

It is an amenable number.

6606637672 is a deficient number, since it is larger than the sum of its proper divisors (5782756568).

6606637672 is a wasteful number, since it uses less digits than its factorization.

6606637672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129912 (or 129908 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 49.

The square root of 6606637672 is about 81281.2258273705. The cubic root of 6606637672 is about 1876.4060727341.

The spelling of 6606637672 in words is "six billion, six hundred six million, six hundred thirty-seven thousand, six hundred seventy-two".