6625656879 has 16 divisors (see below), whose sum is σ = 8966299392. Its totient is φ = 4351209408.

The previous prime is 6625656769. The next prime is 6625656899. The reversal of 6625656879 is 9786565266.

It is a happy number.

It is not a de Polignac number, because 6625656879 - 2⁸ = 6625656623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625656899) 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, 162822 + ... + 199404.

It is an arithmetic number, because the mean of its divisors is an integer number (560393712).

Almost surely, 2^6625656879 is an apocalyptic number.

6625656879 is a deficient number, since it is larger than the sum of its proper divisors (2340642513).

6625656879 is a wasteful number, since it uses less digits than its factorization.

6625656879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37486.

The product of its digits is 32659200, while the sum is 60.

The square root of 6625656879 is about 81398.1380561005. The cubic root of 6625656879 is about 1878.2049486498.

The spelling of 6625656879 in words is "six billion, six hundred twenty-five million, six hundred fifty-six thousand, eight hundred seventy-nine".