668250 has 96 divisors (see below), whose sum is σ = 2044224. Its totient is φ = 162000.

The previous prime is 668243. The next prime is 668273. The reversal of 668250 is 52866.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60745 + ... + 60755.

It is an arithmetic number, because the mean of its divisors is an integer number (21294).

2⁶⁶⁸²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022112).

668250 is an abundant number, since it is smaller than the sum of its proper divisors (1375974).

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

668250 is a wasteful number, since it uses less digits than its factorization.

668250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43 (or 21 counting only the distinct ones).

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

The square root of 668250 is about 817.4655956063. The cubic root of 668250 is about 87.4271502488.

The spelling of 668250 in words is "six hundred sixty-eight thousand, two hundred fifty".