6721040652 has 24 divisors (see below), whose sum is σ = 15708890736. Its totient is φ = 2236566528.

The previous prime is 6721040587. The next prime is 6721040681. The reversal of 6721040652 is 2560401276.

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, 465133 + ... + 479364.

It is an arithmetic number, because the mean of its divisors is an integer number (654537114).

Almost surely, 2^6721040652 is an apocalyptic number.

It is an amenable number.

6721040652 is an abundant number, since it is smaller than the sum of its proper divisors (8987850084).

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

6721040652 is a wasteful number, since it uses less digits than its factorization.

6721040652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945097 (or 945095 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 6721040652 is about 81981.9532092277. The cubic root of 6721040652 is about 1887.1749973701.

The spelling of 6721040652 in words is "six billion, seven hundred twenty-one million, forty thousand, six hundred fifty-two".