5685666 has 48 divisors (see below), whose sum is σ = 13444704. Its totient is φ = 1598016.

The previous prime is 5685661. The next prime is 5685677. The reversal of 5685666 is 6665865.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5685661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24286 + ... + 24518.

It is an arithmetic number, because the mean of its divisors is an integer number (280098).

Almost surely, 2^5685666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5685666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6722352).

5685666 is an abundant number, since it is smaller than the sum of its proper divisors (7759038).

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

5685666 is a wasteful number, since it uses less digits than its factorization.

5685666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 328 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 5685666 is about 2384.4634616618. The cubic root of 5685666 is about 178.4817359244.

The spelling of 5685666 in words is "five million, six hundred eighty-five thousand, six hundred sixty-six".