6901257872 has 20 divisors (see below), whose sum is σ = 13448482620. Its totient is φ = 3430681728.

The previous prime is 6901257863. The next prime is 6901257877. The reversal of 6901257872 is 2787521096.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2451834256 + 4449423616 = 49516^2 + 66704^2 .

It is not an unprimeable number, because it can be changed into a prime (6901257877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243847 + ... + 1249382.

It is an arithmetic number, because the mean of its divisors is an integer number (672424131).

Almost surely, 2^6901257872 is an apocalyptic number.

It is an amenable number.

6901257872 is a deficient number, since it is larger than the sum of its proper divisors (6547224748).

6901257872 is a wasteful number, since it uses less digits than its factorization.

6901257872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493410 (or 2493404 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 6901257872 is about 83073.8097838302. The cubic root of 6901257872 is about 1903.8939413771.

The spelling of 6901257872 in words is "six billion, nine hundred one million, two hundred fifty-seven thousand, eight hundred seventy-two".