256068351 has 32 divisors (see below), whose sum is σ = 472972800. Its totient is φ = 133021440.

The previous prime is 256068349. The next prime is 256068391. The reversal of 256068351 is 153860652.

256068351 is a `hidden beast` number, since 2 + 560 + 68 + 35 + 1 = 666.

It is not a de Polignac number, because 256068351 - 2¹ = 256068349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256068391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59506 + ... + 63663.

It is an arithmetic number, because the mean of its divisors is an integer number (14780400).

Almost surely, 2^256068351 is an apocalyptic number.

256068351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

256068351 is a deficient number, since it is larger than the sum of its proper divisors (216904449).

256068351 is a wasteful number, since it uses less digits than its factorization.

256068351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123196 (or 123190 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 256068351 is about 16002.1358261952. The cubic root of 256068351 is about 635.0169264093.

The spelling of 256068351 in words is "two hundred fifty-six million, sixty-eight thousand, three hundred fifty-one".