6691670624 has 12 divisors (see below), whose sum is σ = 13174226604. Its totient is φ = 3345835296.

The previous prime is 6691670603. The next prime is 6691670641. The reversal of 6691670624 is 4260761966.

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, 104557322 + ... + 104557385.

It is an arithmetic number, because the mean of its divisors is an integer number (1097852217).

Almost surely, 2^6691670624 is an apocalyptic number.

It is an amenable number.

6691670624 is a deficient number, since it is larger than the sum of its proper divisors (6482555980).

6691670624 is a wasteful number, since it uses less digits than its factorization.

6691670624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209114717 (or 209114709 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 6691670624 is about 81802.6321336912. The cubic root of 6691670624 is about 1884.4220846791.

The spelling of 6691670624 in words is "six billion, six hundred ninety-one million, six hundred seventy thousand, six hundred twenty-four".