667625 has 24 divisors (see below), whose sum is σ = 978120. Its totient is φ = 453600.

The previous prime is 667577. The next prime is 667631. The reversal of 667625 is 526766.

It can be written as a sum of positive squares in 4 ways, for example, as 8281 + 659344 = 91^2 + 812^2 .

It is not a de Polignac number, because 667625 - 2⁶ = 667561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667591 and 667600.

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, 6071 + ... + 6179.

It is an arithmetic number, because the mean of its divisors is an integer number (40755).

2⁶⁶⁷⁶²⁵ is an apocalyptic number.

It is an amenable number.

667625 is a deficient number, since it is larger than the sum of its proper divisors (310495).

667625 is a wasteful number, since it uses less digits than its factorization.

667625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 121 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 667625 is about 817.0832270950. The cubic root of 667625 is about 87.3998854961.

The spelling of 667625 in words is "six hundred sixty-seven thousand, six hundred twenty-five".