6720917960 has 32 divisors (see below), whose sum is σ = 15149264760. Its totient is φ = 2683531776.

The previous prime is 6720917953. The next prime is 6720918019. The reversal of 6720917960 is 697190276.

It can be written as a sum of positive squares in 4 ways, for example, as 5963237284 + 757680676 = 77222^2 + 27526^2 .

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, 128549 + ... + 173108.

Almost surely, 2^6720917960 is an apocalyptic number.

It is an amenable number.

6720917960 is an abundant number, since it is smaller than the sum of its proper divisors (8428346800).

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

6720917960 is a wasteful number, since it uses less digits than its factorization.

6720917960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302225 (or 302221 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 6720917960 is about 81981.2049191764. The cubic root of 6720917960 is about 1887.1635138963.

The spelling of 6720917960 in words is "six billion, seven hundred twenty million, nine hundred seventeen thousand, nine hundred sixty".