668070 has 48 divisors (see below), whose sum is σ = 1873872. Its totient is φ = 164160.

The previous prime is 668069. The next prime is 668089. The reversal of 668070 is 70866.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 885 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (39039).

2⁶⁶⁸⁰⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 668070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936936).

668070 is an abundant number, since it is smaller than the sum of its proper divisors (1205802).

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

668070 is a wasteful number, since it uses less digits than its factorization.

668070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 668070 is about 817.3554918149. The cubic root of 668070 is about 87.4192997436.

The spelling of 668070 in words is "six hundred sixty-eight thousand, seventy".