668600 has 24 divisors (see below), whose sum is σ = 1554960. Its totient is φ = 267360.

The previous prime is 668599. The next prime is 668609. The reversal of 668600 is 6866.

668600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 668600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1472 + ... + 1871.

It is an arithmetic number, because the mean of its divisors is an integer number (64790).

2⁶⁶⁸⁶⁰⁰ is an apocalyptic number.

It is an amenable number.

668600 is an abundant number, since it is smaller than the sum of its proper divisors (886360).

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

668600 is a wasteful number, since it uses less digits than its factorization.

668600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 668600 is about 817.6796438704. The cubic root of 668600 is about 87.4424110852.

The spelling of 668600 in words is "six hundred sixty-eight thousand, six hundred".