258880656 has 40 divisors (see below), whose sum is σ = 669932320. Its totient is φ = 86144256.

The previous prime is 258880649. The next prime is 258880679. The reversal of 258880656 is 656088852.

258880656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25356 + ... + 34068.

It is an arithmetic number, because the mean of its divisors is an integer number (16748308).

Almost surely, 2^258880656 is an apocalyptic number.

It is an amenable number.

258880656 is an abundant number, since it is smaller than the sum of its proper divisors (411051664).

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

258880656 is a wasteful number, since it uses less digits than its factorization.

258880656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343 (or 9337 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The square root of 258880656 is about 16089.7686745335. The cubic root of 258880656 is about 637.3331869579. Note that the first 3 decimals are identical.

The spelling of 258880656 in words is "two hundred fifty-eight million, eight hundred eighty thousand, six hundred fifty-six".