669336 has 24 divisors (see below), whose sum is σ = 1683420. Its totient is φ = 221776.

The previous prime is 669329. The next prime is 669359. The reversal of 669336 is 633966.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 669297 and 669306.

It is a congruent 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, 3925 + ... + 4091.

2⁶⁶⁹³³⁶ is an apocalyptic number.

It is an amenable number.

669336 is an abundant number, since it is smaller than the sum of its proper divisors (1014084).

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

669336 is a wasteful number, since it uses less digits than its factorization.

669336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 172 counting only the distinct ones).

The product of its digits is 17496, while the sum is 33.

The square root of 669336 is about 818.1295740896. The cubic root of 669336 is about 87.4744850776.

Multiplying 669336 by its product of digits (17496), we get a square (11710702656 = 108216²).

The spelling of 669336 in words is "six hundred sixty-nine thousand, three hundred thirty-six".