6256631879 has 4 divisors (see below), whose sum is σ = 6528659376. Its totient is φ = 5984604384.

The previous prime is 6256631863. The next prime is 6256631933. The reversal of 6256631879 is 9781366526.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9781366526 = 2 ⋅4890683263.

It is a cyclic number.

It is not a de Polignac number, because 6256631879 - 2⁴ = 6256631863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6256631879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6256631819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136013714 + ... + 136013759.

It is an arithmetic number, because the mean of its divisors is an integer number (1632164844).

Almost surely, 2^6256631879 is an apocalyptic number.

6256631879 is a deficient number, since it is larger than the sum of its proper divisors (272027497).

6256631879 is a wasteful number, since it uses less digits than its factorization.

6256631879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272027496.

The product of its digits is 3265920, while the sum is 53.

The square root of 6256631879 is about 79098.8740691042. The cubic root of 6256631879 is about 1842.6670403762.

The spelling of 6256631879 in words is "six billion, two hundred fifty-six million, six hundred thirty-one thousand, eight hundred seventy-nine".