2668256264 has 8 divisors (see below), whose sum is σ = 5002980510. Its totient is φ = 1334128128.

The previous prime is 2668256249. The next prime is 2668256281. The reversal of 2668256264 is 4626528662.

It can be written as a sum of positive squares in only one way, i.e., 2589792100 + 78464164 = 50890^2 + 8858^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166766009 + ... + 166766024.

Almost surely, 2^2668256264 is an apocalyptic number.

It is an amenable number.

2668256264 is a deficient number, since it is larger than the sum of its proper divisors (2334724246).

2668256264 is a wasteful number, since it uses less digits than its factorization.

2668256264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333532039 (or 333532035 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The square root of 2668256264 is about 51655.1668664423. The cubic root of 2668256264 is about 1386.9980352776.

The spelling of 2668256264 in words is "two billion, six hundred sixty-eight million, two hundred fifty-six thousand, two hundred sixty-four".