665372 has 12 divisors (see below), whose sum is σ = 1170120. Its totient is φ = 331056.

The previous prime is 665369. The next prime is 665381. The reversal of 665372 is 273566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379 + ... + 1797.

It is an arithmetic number, because the mean of its divisors is an integer number (97510).

2⁶⁶⁵³⁷² is an apocalyptic number.

It is an amenable number.

665372 is a deficient number, since it is larger than the sum of its proper divisors (504748).

665372 is a wasteful number, since it uses less digits than its factorization.

665372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its digits is 7560, while the sum is 29.

The square root of 665372 is about 815.7033774602. The cubic root of 665372 is about 87.3014600521.

The spelling of 665372 in words is "six hundred sixty-five thousand, three hundred seventy-two".