669625 has 16 divisors (see below), whose sum is σ = 913536. Its totient is φ = 486000.

The previous prime is 669611. The next prime is 669637. The reversal of 669625 is 526966.

It is not a de Polignac number, because 669625 - 2⁹ = 669113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (57096).

2⁶⁶⁹⁶²⁵ is an apocalyptic number.

It is an amenable number.

669625 is a deficient number, since it is larger than the sum of its proper divisors (243911).

669625 is a wasteful number, since it uses less digits than its factorization.

669625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 503 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 669625 is about 818.3061774177. The cubic root of 669625 is about 87.4870729202.

The spelling of 669625 in words is "six hundred sixty-nine thousand, six hundred twenty-five".