6564942215 has 8 divisors (see below), whose sum is σ = 8483925408. Its totient is φ = 4847957280.

The previous prime is 6564942211. The next prime is 6564942221. The reversal of 6564942215 is 5122494656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6564942215 - 2² = 6564942211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564942211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50499491 + ... + 50499620.

It is an arithmetic number, because the mean of its divisors is an integer number (1060490676).

Almost surely, 2^6564942215 is an apocalyptic number.

6564942215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6564942215 is a deficient number, since it is larger than the sum of its proper divisors (1918983193).

6564942215 is a wasteful number, since it uses less digits than its factorization.

6564942215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100999129.

The product of its digits is 518400, while the sum is 44.

The square root of 6564942215 is about 81024.3310061860. The cubic root of 6564942215 is about 1872.4503148130.

The spelling of 6564942215 in words is "six billion, five hundred sixty-four million, nine hundred forty-two thousand, two hundred fifteen".