6562438864 has 10 divisors (see below), whose sum is σ = 12714725330. Its totient is φ = 3281219424.

The previous prime is 6562438859. The next prime is 6562438901. The reversal of 6562438864 is 4688342656.

It can be written as a sum of positive squares in only one way, i.e., 3793574464 + 2768864400 = 61592^2 + 52620^2 .

It is a super-2 number, since 2×6562438864² = 86131207687475220992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205076199 + ... + 205076230.

It is an arithmetic number, because the mean of its divisors is an integer number (1271472533).

Almost surely, 2^6562438864 is an apocalyptic number.

It is an amenable number.

6562438864 is a deficient number, since it is larger than the sum of its proper divisors (6152286466).

6562438864 is a wasteful number, since it uses less digits than its factorization.

6562438864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410152437 (or 410152431 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The square root of 6562438864 is about 81008.8813896353. The cubic root of 6562438864 is about 1872.2122829491.

The spelling of 6562438864 in words is "six billion, five hundred sixty-two million, four hundred thirty-eight thousand, eight hundred sixty-four".