256760851 has 8 divisors (see below), whose sum is σ = 271307520. Its totient is φ = 242317512.

The previous prime is 256760839. The next prime is 256760863. The reversal of 256760851 is 158067652.

It is an interprime number because it is at equal distance from previous prime (256760839) and next prime (256760863).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256760851 is a prime.

It is a super-2 number, since 2×256760851² = 131852269212488402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256760821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20695 + ... + 30688.

It is an arithmetic number, because the mean of its divisors is an integer number (33913440).

Almost surely, 2^256760851 is an apocalyptic number.

256760851 is a deficient number, since it is larger than the sum of its proper divisors (14546669).

256760851 is a wasteful number, since it uses less digits than its factorization.

256760851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51665.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 256760851 is about 16023.7589535040. The cubic root of 256760851 is about 635.5888484522.

The spelling of 256760851 in words is "two hundred fifty-six million, seven hundred sixty thousand, eight hundred fifty-one".