390566 has 16 divisors (see below), whose sum is σ = 656208. Its totient is φ = 172800.

The previous prime is 390553. The next prime is 390581. The reversal of 390566 is 665093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (41013).

2³⁹⁰⁵⁶⁶ is an apocalyptic number.

390566 is a deficient number, since it is larger than the sum of its proper divisors (265642).

390566 is a wasteful number, since it uses less digits than its factorization.

390566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 390566 is about 624.9527982176. The cubic root of 390566 is about 73.0967629064.

The spelling of 390566 in words is "three hundred ninety thousand, five hundred sixty-six".