665492 has 12 divisors (see below), whose sum is σ = 1204980. Its totient is φ = 321216.

The previous prime is 665479. The next prime is 665501. The reversal of 665492 is 294566.

It can be written as a sum of positive squares in 2 ways, for example, as 126736 + 538756 = 356^2 + 734^2 .

It is a congruent number.

It is an unprimeable number.

665492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753 + ... + 2984.

It is an arithmetic number, because the mean of its divisors is an integer number (100415).

2⁶⁶⁵⁴⁹² is an apocalyptic number.

It is an amenable number.

665492 is a deficient number, since it is larger than the sum of its proper divisors (539488).

665492 is a wasteful number, since it uses less digits than its factorization.

665492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770 (or 5768 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 665492 is about 815.7769302941. The cubic root of 665492 is about 87.3067080164.

The spelling of 665492 in words is "six hundred sixty-five thousand, four hundred ninety-two".