6664167 has 16 divisors (see below), whose sum is σ = 10061280. Its totient is φ = 4358016.

The previous prime is 6664159. The next prime is 6664169. The reversal of 6664167 is 7614666.

It is not a de Polignac number, because 6664167 - 2³ = 6664159 is a prime.

It is a super-2 number, since 2×6664167² = 88822243607778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898 + ... + 3759.

It is an arithmetic number, because the mean of its divisors is an integer number (628830).

Almost surely, 2^6664167 is an apocalyptic number.

6664167 is a deficient number, since it is larger than the sum of its proper divisors (3397113).

6664167 is a wasteful number, since it uses less digits than its factorization.

6664167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719 (or 4713 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 6664167 is about 2581.5047937201. The cubic root of 6664167 is about 188.1836800717.

The spelling of 6664167 in words is "six million, six hundred sixty-four thousand, one hundred sixty-seven".