256792807 has 4 divisors (see below), whose sum is σ = 256980136. Its totient is φ = 256605480.

The previous prime is 256792801. The next prime is 256792813. The reversal of 256792807 is 708297652.

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

It is an interprime number because it is at equal distance from previous prime (256792801) and next prime (256792813).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256792807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256792801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91593 + ... + 94354.

It is an arithmetic number, because the mean of its divisors is an integer number (64245034).

Almost surely, 2^256792807 is an apocalyptic number.

256792807 is a deficient number, since it is larger than the sum of its proper divisors (187329).

256792807 is a wasteful number, since it uses less digits than its factorization.

256792807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187328.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 256792807 is about 16024.7560667862. The cubic root of 256792807 is about 635.6152154452.

The spelling of 256792807 in words is "two hundred fifty-six million, seven hundred ninety-two thousand, eight hundred seven".