6501887564 has 24 divisors (see below), whose sum is σ = 11493798288. Its totient is φ = 3218019840.

The previous prime is 6501887531. The next prime is 6501887599. The reversal of 6501887564 is 4657881056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357704 + ... + 375440.

It is an arithmetic number, because the mean of its divisors is an integer number (478908262).

Almost surely, 2^6501887564 is an apocalyptic number.

It is an amenable number.

6501887564 is a deficient number, since it is larger than the sum of its proper divisors (4991910724).

6501887564 is a wasteful number, since it uses less digits than its factorization.

6501887564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18665 (or 18663 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 50.

The square root of 6501887564 is about 80634.2828082448. The cubic root of 6501887564 is about 1866.4362110194.

The spelling of 6501887564 in words is "six billion, five hundred one million, eight hundred eighty-seven thousand, five hundred sixty-four".