666364 has 12 divisors (see below), whose sum is σ = 1185688. Its totient is φ = 327600.

The previous prime is 666353. The next prime is 666403. The reversal of 666364 is 463666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122 + ... + 1609.

2⁶⁶⁶³⁶⁴ is an apocalyptic number.

It is an amenable number.

666364 is a deficient number, since it is larger than the sum of its proper divisors (519324).

666364 is a wasteful number, since it uses less digits than its factorization.

666364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2794 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 666364 is about 816.3112151625. The cubic root of 666364 is about 87.3448242881.

It can be divided in two parts, 66 and 6364, that multiplied together give a palindrome (420024).

The spelling of 666364 in words is "six hundred sixty-six thousand, three hundred sixty-four".