668075 has 6 divisors (see below), whose sum is σ = 828444. Its totient is φ = 534440.

The previous prime is 668069. The next prime is 668089. The reversal of 668075 is 570866.

668075 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668075 - 2⁸ = 667819 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13337 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (138074).

2⁶⁶⁸⁰⁷⁵ is an apocalyptic number.

668075 is a deficient number, since it is larger than the sum of its proper divisors (160369).

668075 is a wasteful number, since it uses less digits than its factorization.

668075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26733 (or 26728 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 668075 is about 817.3585504538. The cubic root of 668075 is about 87.4195178322.

The spelling of 668075 in words is "six hundred sixty-eight thousand, seventy-five".