669563503 has 8 divisors (see below), whose sum is σ = 765943808. Its totient is φ = 573365304.

The previous prime is 669563491. The next prime is 669563509. The reversal of 669563503 is 305365966.

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 669563503 - 2⁵ = 669563471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669563503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669563509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37551 + ... + 52432.

It is an arithmetic number, because the mean of its divisors is an integer number (95742976).

Almost surely, 2^669563503 is an apocalyptic number.

669563503 is a deficient number, since it is larger than the sum of its proper divisors (96380305).

669563503 is a wasteful number, since it uses less digits than its factorization.

669563503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91053.

The product of its (nonzero) digits is 437400, while the sum is 43.

The square root of 669563503 is about 25875.9251622043. The cubic root of 669563503 is about 874.8439462652.

The spelling of 669563503 in words is "six hundred sixty-nine million, five hundred sixty-three thousand, five hundred three".