256070117 has 4 divisors (see below), whose sum is σ = 262025280. Its totient is φ = 250114956.

The previous prime is 256070077. The next prime is 256070119. The reversal of 256070117 is 711070652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256070117 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 256070117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256070119) 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, 2977517 + ... + 2977602.

It is an arithmetic number, because the mean of its divisors is an integer number (65506320).

Almost surely, 2^256070117 is an apocalyptic number.

It is an amenable number.

256070117 is a deficient number, since it is larger than the sum of its proper divisors (5955163).

256070117 is an equidigital number, since it uses as much as digits as its factorization.

256070117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955162.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 256070117 is about 16002.1910062341. The cubic root of 256070117 is about 635.0183862244.

The spelling of 256070117 in words is "two hundred fifty-six million, seventy thousand, one hundred seventeen".