256360663 has 12 divisors (see below), whose sum is σ = 293930208. Its totient is φ = 222718080.

The previous prime is 256360651. The next prime is 256360729. The reversal of 256360663 is 366063652.

It is a de Polignac number, because none of the positive numbers 2^k-256360663 is a prime.

It is a super-3 number, since 3×256360663³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256360603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41743 + ... + 47488.

It is an arithmetic number, because the mean of its divisors is an integer number (24494184).

Almost surely, 2^256360663 is an apocalyptic number.

256360663 is a deficient number, since it is larger than the sum of its proper divisors (37569545).

256360663 is a wasteful number, since it uses less digits than its factorization.

256360663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89274 (or 89261 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 256360663 is about 16011.2667518844. The cubic root of 256360663 is about 635.2584667114.

The spelling of 256360663 in words is "two hundred fifty-six million, three hundred sixty thousand, six hundred sixty-three".