5640764685 has 16 divisors (see below), whose sum is σ = 9026458560. Its totient is φ = 3007996160.

The previous prime is 5640764671. The next prime is 5640764693. The reversal of 5640764685 is 5864670465.

It is not a de Polignac number, because 5640764685 - 2⁵ = 5640764653 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110965 + ... + 153605.

It is an arithmetic number, because the mean of its divisors is an integer number (564153660).

Almost surely, 2^5640764685 is an apocalyptic number.

It is an amenable number.

5640764685 is a deficient number, since it is larger than the sum of its proper divisors (3385693875).

5640764685 is a wasteful number, since it uses less digits than its factorization.

5640764685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51468.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The square root of 5640764685 is about 75105.0243658838. The cubic root of 5640764685 is about 1780.1065337281.

The spelling of 5640764685 in words is "five billion, six hundred forty million, seven hundred sixty-four thousand, six hundred eighty-five".