268665156 has 18 divisors (see below), whose sum is σ = 679125902. Its totient is φ = 89555040.

The previous prime is 268665121. The next prime is 268665181. The reversal of 268665156 is 651566862.

It is a happy number.

268665156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 255488256 + 13176900 = 15984^2 + 3630^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3731425 + ... + 3731496.

Almost surely, 2^268665156 is an apocalyptic number.

It is an amenable number.

268665156 is an abundant number, since it is smaller than the sum of its proper divisors (410460746).

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

268665156 is a wasteful number, since it uses less digits than its factorization.

268665156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462931 (or 7462926 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 268665156 is about 16391.0083887478. The cubic root of 268665156 is about 645.2635231110.

The spelling of 268665156 in words is "two hundred sixty-eight million, six hundred sixty-five thousand, one hundred fifty-six".