669803 has 4 divisors (see below), whose sum is σ = 675048. Its totient is φ = 664560.

The previous prime is 669791. The next prime is 669839. The reversal of 669803 is 308966.

It is a happy number.

669803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 669803 - 2⁴ = 669787 is a prime.

It is a super-3 number, since 3×669803³ = 901493334295333881, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669803.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669803.

It is not an unprimeable number, because it can be changed into a prime (669853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2426 + ... + 2687.

It is an arithmetic number, because the mean of its divisors is an integer number (168762).

2⁶⁶⁹⁸⁰³ is an apocalyptic number.

669803 is a deficient number, since it is larger than the sum of its proper divisors (5245).

669803 is a wasteful number, since it uses less digits than its factorization.

669803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 669803 is about 818.4149314376. The cubic root of 669803 is about 87.4948241836.

The spelling of 669803 in words is "six hundred sixty-nine thousand, eight hundred three".