6564120206 has 16 divisors (see below), whose sum is σ = 11914706016. Its totient is φ = 2647712256.

The previous prime is 6564120139. The next prime is 6564120221. The reversal of 6564120206 is 6020214656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13789931 + ... + 13790406.

It is an arithmetic number, because the mean of its divisors is an integer number (744669126).

Almost surely, 2^6564120206 is an apocalyptic number.

6564120206 is a deficient number, since it is larger than the sum of its proper divisors (5350585810).

6564120206 is a wasteful number, since it uses less digits than its factorization.

6564120206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580363.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6564120206 is about 81019.2582414823. The cubic root of 6564120206 is about 1872.3721605198.

The spelling of 6564120206 in words is "six billion, five hundred sixty-four million, one hundred twenty thousand, two hundred six".