6517657564 has 12 divisors (see below), whose sum is σ = 12442800888. Its totient is φ = 2962571600.

The previous prime is 6517657511. The next prime is 6517657583. The reversal of 6517657564 is 4657567156.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74064247 + ... + 74064334.

It is an arithmetic number, because the mean of its divisors is an integer number (1036900074).

Almost surely, 2^6517657564 is an apocalyptic number.

It is an amenable number.

6517657564 is a deficient number, since it is larger than the sum of its proper divisors (5925143324).

6517657564 is a wasteful number, since it uses less digits than its factorization.

6517657564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148128596 (or 148128594 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 52.

The square root of 6517657564 is about 80732.0107763953. The cubic root of 6517657564 is about 1867.9439749378.

The spelling of 6517657564 in words is "six billion, five hundred seventeen million, six hundred fifty-seven thousand, five hundred sixty-four".