668260 has 12 divisors (see below), whose sum is σ = 1403388. Its totient is φ = 267296.

The previous prime is 668243. The next prime is 668273. The reversal of 668260 is 62866.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 481636 + 186624 = 694^2 + 432^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16687 + ... + 16726.

It is an arithmetic number, because the mean of its divisors is an integer number (116949).

2⁶⁶⁸²⁶⁰ is an apocalyptic number.

It is an amenable number.

668260 is an abundant number, since it is smaller than the sum of its proper divisors (735128).

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

668260 is a wasteful number, since it uses less digits than its factorization.

668260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33422 (or 33420 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 668260 is about 817.4717120488. The cubic root of 668260 is about 87.4275863466.

The spelling of 668260 in words is "six hundred sixty-eight thousand, two hundred sixty".