5666388 has 48 divisors (see below), whose sum is σ = 16275840. Its totient is φ = 1494144.

The previous prime is 5666387. The next prime is 5666393. The reversal of 5666388 is 8836665.

5666388 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666383) 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, 1503 + ... + 3686.

It is an arithmetic number, because the mean of its divisors is an integer number (339080).

Almost surely, 2^5666388 is an apocalyptic number.

It is an amenable number.

5666388 is an abundant number, since it is smaller than the sum of its proper divisors (10609452).

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

5666388 is a wasteful number, since it uses less digits than its factorization.

5666388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216 (or 5214 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 5666388 is about 2380.4176104205. The cubic root of 5666388 is about 178.2797855553.

The spelling of 5666388 in words is "five million, six hundred sixty-six thousand, three hundred eighty-eight".