668625 has 16 divisors (see below), whose sum is σ = 1113216. Its totient is φ = 356400.

The previous prime is 668623. The next prime is 668671. The reversal of 668625 is 526866.

668625 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 668625 - 2¹ = 668623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (69576).

2⁶⁶⁸⁶²⁵ is an apocalyptic number.

It is an amenable number.

668625 is a deficient number, since it is larger than the sum of its proper divisors (444591).

668625 is a wasteful number, since it uses less digits than its factorization.

668625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801 (or 1791 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 668625 is about 817.6949308880. The cubic root of 668625 is about 87.4435009412.

The spelling of 668625 in words is "six hundred sixty-eight thousand, six hundred twenty-five".