6701991680 has 72 divisors (see below), whose sum is σ = 16571313024. Its totient is φ = 2594304000.

The previous prime is 6701991677. The next prime is 6701991691. The reversal of 6701991680 is 861991076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44771 + ... + 124130.

Almost surely, 2^6701991680 is an apocalyptic number.

It is an amenable number.

6701991680 is an abundant number, since it is smaller than the sum of its proper divisors (9869321344).

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

6701991680 is a wasteful number, since it uses less digits than its factorization.

6701991680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168953 (or 168939 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 6701991680 is about 81865.6929366630. The cubic root of 6701991680 is about 1885.3904146219.

The spelling of 6701991680 in words is "six billion, seven hundred one million, nine hundred ninety-one thousand, six hundred eighty".