268256646 has 48 divisors (see below), whose sum is σ = 665293824. Its totient is φ = 76524912.

The previous prime is 268256627. The next prime is 268256713. The reversal of 268256646 is 646652862.

268256646 is a `hidden beast` number, since 2 + 6 + 82 + 566 + 4 + 6 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 107505 + ... + 109971.

It is an arithmetic number, because the mean of its divisors is an integer number (13860288).

Almost surely, 2^268256646 is an apocalyptic number.

268256646 is an abundant number, since it is smaller than the sum of its proper divisors (397037178).

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

268256646 is a wasteful number, since it uses less digits than its factorization.

268256646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345 (or 3342 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 268256646 is about 16378.5422428249. The cubic root of 268256646 is about 644.9363124425.

The spelling of 268256646 in words is "two hundred sixty-eight million, two hundred fifty-six thousand, six hundred forty-six".