668052 has 72 divisors (see below), whose sum is σ = 2114112. Its totient is φ = 172800.

The previous prime is 668051. The next prime is 668069. The reversal of 668052 is 250866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2652 + ... + 2892.

2⁶⁶⁸⁰⁵² 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 668052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1057056).

668052 is an abundant number, since it is smaller than the sum of its proper divisors (1446060).

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

668052 is a wasteful number, since it uses less digits than its factorization.

668052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 668052 is about 817.3444806200. The cubic root of 668052 is about 87.4185146155.

It can be divided in two parts, 66 and 8052, that added together give a palindrome (8118).

The spelling of 668052 in words is "six hundred sixty-eight thousand, fifty-two".