665352 has 24 divisors (see below), whose sum is σ = 1802190. Its totient is φ = 221760.

The previous prime is 665351. The next prime is 665359. The reversal of 665352 is 253566.

665352 is a `hidden beast` number, since 6 + 653 + 5 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 298116 = 606^2 + 546^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (665351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4549 + ... + 4692.

2⁶⁶⁵³⁵² is an apocalyptic number.

It is an amenable number.

665352 is an abundant number, since it is smaller than the sum of its proper divisors (1136838).

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

665352 is a wasteful number, since it uses less digits than its factorization.

665352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9253 (or 9246 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 665352 is about 815.6911180098. The cubic root of 665352 is about 87.3005853301.

The spelling of 665352 in words is "six hundred sixty-five thousand, three hundred fifty-two".