6664923 has 20 divisors (see below), whose sum is σ = 10062360. Its totient is φ = 4396032.

The previous prime is 6664891. The next prime is 6664937. The reversal of 6664923 is 3294666.

It is not a de Polignac number, because 6664923 - 2⁵ = 6664891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6664223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8283 + ... + 9051.

It is an arithmetic number, because the mean of its divisors is an integer number (503118).

Almost surely, 2^6664923 is an apocalyptic number.

6664923 is a deficient number, since it is larger than the sum of its proper divisors (3397437).

6664923 is a wasteful number, since it uses less digits than its factorization.

6664923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 879 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 6664923 is about 2581.6512157919. The cubic root of 6664923 is about 188.1907958139.

The spelling of 6664923 in words is "six million, six hundred sixty-four thousand, nine hundred twenty-three".