668370 has 16 divisors (see below), whose sum is σ = 1604160. Its totient is φ = 178224.

The previous prime is 668347. The next prime is 668407. The reversal of 668370 is 73866.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 22279 = 668370 / (6 + 6 + 8 + 3 + 7 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11110 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (100260).

2⁶⁶⁸³⁷⁰ is an apocalyptic number.

668370 is an abundant number, since it is smaller than the sum of its proper divisors (935790).

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

668370 is a wasteful number, since it uses less digits than its factorization.

668370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 668370 is about 817.5389898959. The cubic root of 668370 is about 87.4323831357.

The spelling of 668370 in words is "six hundred sixty-eight thousand, three hundred seventy".