6564155600 has 60 divisors (see below), whose sum is σ = 16698070764. Its totient is φ = 2471208960.

The previous prime is 6564155531. The next prime is 6564155623. The reversal of 6564155600 is 65514656.

It can be written as a sum of positive squares in 6 ways, for example, as 456420496 + 6107735104 = 21364^2 + 78152^2 .

It is a super-2 number, since 2×6564155600² = 86176277482022720000, 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475859 + ... + 489458.

Almost surely, 2^6564155600 is an apocalyptic number.

It is an amenable number.

6564155600 is an abundant number, since it is smaller than the sum of its proper divisors (10133915164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6564155600 is a wasteful number, since it uses less digits than its factorization.

6564155600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965352 (or 965341 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 6564155600 is about 81019.4766707364. The cubic root of 6564155600 is about 1872.3755258157.

The spelling of 6564155600 in words is "six billion, five hundred sixty-four million, one hundred fifty-five thousand, six hundred".