256680954 has 32 divisors (see below), whose sum is σ = 577632000. Its totient is φ = 84475872.

The previous prime is 256680917. The next prime is 256680973. The reversal of 256680954 is 459086652.

256680954 is a `hidden beast` number, since 2 + 566 + 80 + 9 + 5 + 4 = 666.

It is a super-2 number, since 2×256680954² = 131770224292700232, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25819 + ... + 34350.

It is an arithmetic number, because the mean of its divisors is an integer number (18051000).

Almost surely, 2^256680954 is an apocalyptic number.

256680954 is an abundant number, since it is smaller than the sum of its proper divisors (320951046).

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

256680954 is a wasteful number, since it uses less digits than its factorization.

256680954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60259 (or 60253 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 256680954 is about 16021.2656803387. The cubic root of 256680954 is about 635.5229156198.

The spelling of 256680954 in words is "two hundred fifty-six million, six hundred eighty thousand, nine hundred fifty-four".