664852 has 12 divisors (see below), whose sum is σ = 1169280. Its totient is φ = 330776.

The previous prime is 664849. The next prime is 664879. The reversal of 664852 is 258466.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1149 + ... + 1627.

It is an arithmetic number, because the mean of its divisors is an integer number (97440).

2⁶⁶⁴⁸⁵² is an apocalyptic number.

It is an amenable number.

664852 is a deficient number, since it is larger than the sum of its proper divisors (504428).

664852 is a wasteful number, since it uses less digits than its factorization.

664852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 828 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 664852 is about 815.3845718432. The cubic root of 664852 is about 87.2787115793.

It can be divided in two parts, 6648 and 52, that multiplied together give a triangular number (345696 = T₈₃₁).

The spelling of 664852 in words is "six hundred sixty-four thousand, eight hundred fifty-two".