268563660 has 48 divisors (see below), whose sum is σ = 761510400. Its totient is φ = 70709184.

The previous prime is 268563601. The next prime is 268563679. The reversal of 268563660 is 66365862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23590 + ... + 33069.

It is an arithmetic number, because the mean of its divisors is an integer number (15864800).

Almost surely, 2^268563660 is an apocalyptic number.

268563660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268563660 is an abundant number, since it is smaller than the sum of its proper divisors (492946740).

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

268563660 is a wasteful number, since it uses less digits than its factorization.

268563660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56750 (or 56748 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 268563660 is about 16387.9120085507. The cubic root of 268563660 is about 645.1822572503.

The spelling of 268563660 in words is "two hundred sixty-eight million, five hundred sixty-three thousand, six hundred sixty".