667725 has 24 divisors (see below), whose sum is σ = 1145760. Its totient is φ = 342720.

The previous prime is 667699. The next prime is 667727. The reversal of 667725 is 527766.

It is not a de Polignac number, because 667725 - 2¹¹ = 665677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2022 + ... + 2328.

It is an arithmetic number, because the mean of its divisors is an integer number (47740).

2⁶⁶⁷⁷²⁵ is an apocalyptic number.

It is an amenable number.

667725 is a deficient number, since it is larger than the sum of its proper divisors (478035).

667725 is a wasteful number, since it uses less digits than its factorization.

667725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 344 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 667725 is about 817.1444180804. The cubic root of 667725 is about 87.4042489997.

The spelling of 667725 in words is "six hundred sixty-seven thousand, seven hundred twenty-five".