6401695392 has 72 divisors (see below), whose sum is σ = 18648875700. Its totient is φ = 2081848320.

The previous prime is 6401695373. The next prime is 6401695427. The reversal of 6401695392 is 2935961046.

It can be written as a sum of positive squares in 2 ways, for example, as 6022380816 + 379314576 = 77604^2 + 19476^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259267 + ... + 282882.

Almost surely, 2^6401695392 is an apocalyptic number.

It is an amenable number.

6401695392 is an abundant number, since it is smaller than the sum of its proper divisors (12247180308).

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

6401695392 is a wasteful number, since it uses less digits than its factorization.

6401695392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542206 (or 542195 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 6401695392 is about 80010.5954983463. The cubic root of 6401695392 is about 1856.7994629827.

The spelling of 6401695392 in words is "six billion, four hundred one million, six hundred ninety-five thousand, three hundred ninety-two".