669252 has 24 divisors (see below), whose sum is σ = 1599136. Its totient is φ = 217728.

The previous prime is 669247. The next prime is 669271. The reversal of 669252 is 252966.

It is a d-powerful number, because it can be written as 6 + 6⁵ + 2³ + 9⁵ + 5⁷ + 2¹⁹ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669252.

It is an unprimeable number.

669252 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 1164.

2⁶⁶⁹²⁵² is an apocalyptic number.

It is an amenable number.

669252 is an abundant number, since it is smaller than the sum of its proper divisors (929884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669252 is a wasteful number, since it uses less digits than its factorization.

669252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1345 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 669252 is about 818.0782358675. The cubic root of 669252 is about 87.4708256479.

The spelling of 669252 in words is "six hundred sixty-nine thousand, two hundred fifty-two".