6668169 has 4 divisors (see below), whose sum is σ = 8890896. Its totient is φ = 4445444.

The previous prime is 6668161. The next prime is 6668171. The reversal of 6668169 is 9618666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6668169 - 2³ = 6668161 is a prime.

It is a super-2 number, since 2×6668169² = 88928955625122, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6668169.

It is not an unprimeable number, because it can be changed into a prime (6668161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111359 + ... + 1111364.

It is an arithmetic number, because the mean of its divisors is an integer number (2222724).

Almost surely, 2^6668169 is an apocalyptic number.

It is an amenable number.

6668169 is a deficient number, since it is larger than the sum of its proper divisors (2222727).

6668169 is a wasteful number, since it uses less digits than its factorization.

6668169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222726.

The product of its digits is 93312, while the sum is 42.

The square root of 6668169 is about 2582.2798066825. The cubic root of 6668169 is about 188.2213422123.

The spelling of 6668169 in words is "six million, six hundred sixty-eight thousand, one hundred sixty-nine".