669258 has 12 divisors (see below), whose sum is σ = 1450098. Its totient is φ = 223080.

The previous prime is 669247. The next prime is 669271. The reversal of 669258 is 852966.

It can be written as a sum of positive squares in only one way, i.e., 613089 + 56169 = 783^2 + 237^2 .

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18573 + ... + 18608.

2⁶⁶⁹²⁵⁸ is an apocalyptic number.

669258 is an abundant number, since it is smaller than the sum of its proper divisors (780840).

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

669258 is a wasteful number, since it uses less digits than its factorization.

669258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37189 (or 37186 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 669258 is about 818.0819029902. The cubic root of 669258 is about 87.4710870459.

The spelling of 669258 in words is "six hundred sixty-nine thousand, two hundred fifty-eight".