664052 has 6 divisors (see below), whose sum is σ = 1162098. Its totient is φ = 332024.

The previous prime is 664043. The next prime is 664061. The reversal of 664052 is 250466.

It is an interprime number because it is at equal distance from previous prime (664043) and next prime (664061).

It can be written as a sum of positive squares in only one way, i.e., 524176 + 139876 = 724^2 + 374^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83003 + ... + 83010.

It is an arithmetic number, because the mean of its divisors is an integer number (193683).

2⁶⁶⁴⁰⁵² is an apocalyptic number.

It is an amenable number.

664052 is a deficient number, since it is larger than the sum of its proper divisors (498046).

664052 is a wasteful number, since it uses less digits than its factorization.

664052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166017 (or 166015 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 664052 is about 814.8938581190. The cubic root of 664052 is about 87.2436907559.

The spelling of 664052 in words is "six hundred sixty-four thousand, fifty-two".