256660246 has 32 divisors (see below), whose sum is σ = 417402720. Its totient is φ = 117964800.

The previous prime is 256660219. The next prime is 256660259. The reversal of 256660246 is 642066652.

It is a happy number.

256660246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400086 + ... + 400726.

It is an arithmetic number, because the mean of its divisors is an integer number (13043835).

Almost surely, 2^256660246 is an apocalyptic number.

256660246 is a deficient number, since it is larger than the sum of its proper divisors (160742474).

256660246 is a wasteful number, since it uses less digits than its factorization.

256660246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 256660246 is about 16020.6194012591. The cubic root of 256660246 is about 635.5058246719.

The spelling of 256660246 in words is "two hundred fifty-six million, six hundred sixty thousand, two hundred forty-six".