663852 has 36 divisors (see below), whose sum is σ = 1803480. Its totient is φ = 189504.

The previous prime is 663827. The next prime is 663853. The reversal of 663852 is 258366.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (663853) by changing a digit.

663852 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 11 ways as a sum of consecutive naturals, for example, 24 + ... + 1152.

2⁶⁶³⁸⁵² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (901740).

663852 is an abundant number, since it is smaller than the sum of its proper divisors (1139628).

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

663852 is a wasteful number, since it uses less digits than its factorization.

663852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1141 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 663852 is about 814.7711335093. The cubic root of 663852 is about 87.2349311557.

The spelling of 663852 in words is "six hundred sixty-three thousand, eight hundred fifty-two".