256612086 has 12 divisors (see below), whose sum is σ = 555992892. Its totient is φ = 85537356.

The previous prime is 256612007. The next prime is 256612087. The reversal of 256612086 is 680216652.

256612086 is a `hidden beast` number, since 2 + 566 + 12 + 0 + 86 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 256612086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612087) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7128096 + ... + 7128131.

It is an arithmetic number, because the mean of its divisors is an integer number (46332741).

Almost surely, 2^256612086 is an apocalyptic number.

256612086 is an abundant number, since it is smaller than the sum of its proper divisors (299380806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256612086 is a wasteful number, since it uses less digits than its factorization.

256612086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14256235 (or 14256232 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 256612086 is about 16019.1162677596. The cubic root of 256612086 is about 635.4660731904.

The spelling of 256612086 in words is "two hundred fifty-six million, six hundred twelve thousand, eighty-six".