268899656 has 8 divisors (see below), whose sum is σ = 504186870. Its totient is φ = 134449824.

The previous prime is 268899641. The next prime is 268899677. The reversal of 268899656 is 656998862.

It can be written as a sum of positive squares in only one way, i.e., 239197156 + 29702500 = 15466^2 + 5450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 268899595 and 268899604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16806221 + ... + 16806236.

Almost surely, 2^268899656 is an apocalyptic number.

It is an amenable number.

268899656 is a deficient number, since it is larger than the sum of its proper divisors (235287214).

268899656 is a wasteful number, since it uses less digits than its factorization.

268899656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33612463 (or 33612459 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 59.

The square root of 268899656 is about 16398.1601406987. The cubic root of 268899656 is about 645.4512044311.

The spelling of 268899656 in words is "two hundred sixty-eight million, eight hundred ninety-nine thousand, six hundred fifty-six".