6564894770 has 32 divisors (see below), whose sum is σ = 13565518848. Its totient is φ = 2240722368.

The previous prime is 6564894757. The next prime is 6564894773. The reversal of 6564894770 is 774984656.

It is not an unprimeable number, because it can be changed into a prime (6564894773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194669 + ... + 225888.

It is an arithmetic number, because the mean of its divisors is an integer number (423922464).

Almost surely, 2^6564894770 is an apocalyptic number.

6564894770 is an abundant number, since it is smaller than the sum of its proper divisors (7000624078).

6564894770 is a wasteful number, since it uses less digits than its factorization.

6564894770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420794.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The square root of 6564894770 is about 81024.0382232335. The cubic root of 6564894770 is about 1872.4458040539.

The spelling of 6564894770 in words is "six billion, five hundred sixty-four million, eight hundred ninety-four thousand, seven hundred seventy".