5666664 has 16 divisors (see below), whose sum is σ = 14166720. Its totient is φ = 1888880.

The previous prime is 5666641. The next prime is 5666677. The reversal of 5666664 is 4666665.

It is a super-2 number, since 2×5666664² = 64222161777792, which contains 22 as substring.

It is an unprimeable number.

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, 118032 + ... + 118079.

It is an arithmetic number, because the mean of its divisors is an integer number (885420).

Almost surely, 2^5666664 is an apocalyptic number.

It is an amenable number.

5666664 is an abundant number, since it is smaller than the sum of its proper divisors (8500056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5666664 is a wasteful number, since it uses less digits than its factorization.

5666664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236120 (or 236116 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 5666664 is about 2380.4755827355. The cubic root of 5666664 is about 178.2826800754.

Subtracting from 5666664 its reverse (4666665), we obtain a palindrome (999999).

The spelling of 5666664 in words is "five million, six hundred sixty-six thousand, six hundred sixty-four".