256798079 has 4 divisors (see below), whose sum is σ = 265081920. Its totient is φ = 248514240.

The previous prime is 256798067. The next prime is 256798097. The reversal of 256798079 is 970897652.

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 256798079 - 2⁸ = 256797823 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 256798079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256798049) 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, 4141874 + ... + 4141935.

It is an arithmetic number, because the mean of its divisors is an integer number (66270480).

Almost surely, 2^256798079 is an apocalyptic number.

256798079 is a deficient number, since it is larger than the sum of its proper divisors (8283841).

256798079 is an equidigital number, since it uses as much as digits as its factorization.

256798079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283840.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The square root of 256798079 is about 16024.9205614256. The cubic root of 256798079 is about 635.6195651782.

The spelling of 256798079 in words is "two hundred fifty-six million, seven hundred ninety-eight thousand, seventy-nine".