6666957 has 12 divisors (see below), whose sum is σ = 10505664. Its totient is φ = 4040520.

The previous prime is 6666949. The next prime is 6666977. The reversal of 6666957 is 7596666.

It is not a de Polignac number, because 6666957 - 2³ = 6666949 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33573 + ... + 33770.

It is an arithmetic number, because the mean of its divisors is an integer number (875472).

Almost surely, 2^6666957 is an apocalyptic number.

It is an amenable number.

6666957 is a deficient number, since it is larger than the sum of its proper divisors (3838707).

6666957 is a wasteful number, since it uses less digits than its factorization.

6666957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67360 (or 67357 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 6666957 is about 2582.0451196677. The cubic root of 6666957 is about 188.2099378778.

The spelling of 6666957 in words is "six million, six hundred sixty-six thousand, nine hundred fifty-seven".