5666657 has 4 divisors (see below), whose sum is σ = 5679360. Its totient is φ = 5653956.

The previous prime is 5666641. The next prime is 5666677. The reversal of 5666657 is 7566665.

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 5666657 - 2⁴ = 5666641 is a prime.

It is a super-2 number, since 2×5666657² = 64222003111298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5666677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5657 + ... + 6582.

It is an arithmetic number, because the mean of its divisors is an integer number (1419840).

Almost surely, 2^5666657 is an apocalyptic number.

It is an amenable number.

5666657 is a deficient number, since it is larger than the sum of its proper divisors (12703).

5666657 is a wasteful number, since it uses less digits than its factorization.

5666657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12702.

The product of its digits is 226800, while the sum is 41.

The square root of 5666657 is about 2380.4741124406. The cubic root of 5666657 is about 178.2826066648.

The spelling of 5666657 in words is "five million, six hundred sixty-six thousand, six hundred fifty-seven".