663752 has 16 divisors (see below), whose sum is σ = 1287900. Its totient is φ = 320320.

The previous prime is 663737. The next prime is 663763. The reversal of 663752 is 257366.

It can be written as a sum of positive squares in 2 ways, for example, as 662596 + 1156 = 814^2 + 34^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

663752 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, 1199 + ... + 1662.

2⁶⁶³⁷⁵² is an apocalyptic number.

It is an amenable number.

663752 is a deficient number, since it is larger than the sum of its proper divisors (624148).

663752 is a wasteful number, since it uses less digits than its factorization.

663752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896 (or 2892 counting only the distinct ones).

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

The square root of 663752 is about 814.7097642719. The cubic root of 663752 is about 87.2305506958.

The spelling of 663752 in words is "six hundred sixty-three thousand, seven hundred fifty-two".