2256871679 has 4 divisors (see below), whose sum is σ = 2260553976. Its totient is φ = 2253189384.

The previous prime is 2256871663. The next prime is 2256871759. The reversal of 2256871679 is 9761786522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2256871679 - 2⁴ = 2256871663 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 2256871679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256871649) 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, 1840229 + ... + 1841454.

It is an arithmetic number, because the mean of its divisors is an integer number (565138494).

Almost surely, 2^2256871679 is an apocalyptic number.

2256871679 is a deficient number, since it is larger than the sum of its proper divisors (3682297).

2256871679 is an equidigital number, since it uses as much as digits as its factorization.

2256871679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682296.

The product of its digits is 2540160, while the sum is 53.

The square root of 2256871679 is about 47506.5435387590. The cubic root of 2256871679 is about 1311.7033334834.

The spelling of 2256871679 in words is "two billion, two hundred fifty-six million, eight hundred seventy-one thousand, six hundred seventy-nine".