669503 has 8 divisors (see below), whose sum is σ = 712320. Its totient is φ = 627480.

The previous prime is 669481. The next prime is 669527. The reversal of 669503 is 305966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669503 - 2⁸ = 669247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068 + ... + 3278.

It is an arithmetic number, because the mean of its divisors is an integer number (89040).

2⁶⁶⁹⁵⁰³ is an apocalyptic number.

669503 is a deficient number, since it is larger than the sum of its proper divisors (42817).

669503 is a wasteful number, since it uses less digits than its factorization.

669503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 669503 is about 818.2316297968. The cubic root of 669503 is about 87.4817594631.

The spelling of 669503 in words is "six hundred sixty-nine thousand, five hundred three".