666876256 has 24 divisors (see below), whose sum is σ = 1316456064. Its totient is φ = 332538240.

The previous prime is 666876241. The next prime is 666876277. The reversal of 666876256 is 652678666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16000 + ... + 39871.

It is an arithmetic number, because the mean of its divisors is an integer number (54852336).

Almost surely, 2^666876256 is an apocalyptic number.

It is an amenable number.

666876256 is a deficient number, since it is larger than the sum of its proper divisors (649579808).

666876256 is a wasteful number, since it uses less digits than its factorization.

666876256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56254 (or 56246 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The square root of 666876256 is about 25823.9473357579. The cubic root of 666876256 is about 873.6720017180.

The spelling of 666876256 in words is "six hundred sixty-six million, eight hundred seventy-six thousand, two hundred fifty-six".