6720572685 has 32 divisors (see below), whose sum is σ = 11555402112. Its totient is φ = 3323105280.

The previous prime is 6720572681. The next prime is 6720572701. The reversal of 6720572685 is 5862750276.

It is not a de Polignac number, because 6720572685 - 2² = 6720572681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720572681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179596 + ... + 213765.

It is an arithmetic number, because the mean of its divisors is an integer number (361106316).

Almost surely, 2^6720572685 is an apocalyptic number.

It is an amenable number.

6720572685 is a deficient number, since it is larger than the sum of its proper divisors (4834829427).

6720572685 is a wasteful number, since it uses less digits than its factorization.

6720572685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393453.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The square root of 6720572685 is about 81979.0990740933. The cubic root of 6720572685 is about 1887.1311968058.

The spelling of 6720572685 in words is "six billion, seven hundred twenty million, five hundred seventy-two thousand, six hundred eighty-five".