669583 has 4 divisors (see below), whose sum is σ = 672048. Its totient is φ = 667120.

The previous prime is 669577. The next prime is 669607. The reversal of 669583 is 385966.

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 669583 - 2⁵ = 669551 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 (669283) 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, 766 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (168012).

2⁶⁶⁹⁵⁸³ is an apocalyptic number.

669583 is a deficient number, since it is larger than the sum of its proper divisors (2465).

669583 is a wasteful number, since it uses less digits than its factorization.

669583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464.

The product of its digits is 38880, while the sum is 37.

The square root of 669583 is about 818.2805142492. The cubic root of 669583 is about 87.4852437701.

The spelling of 669583 in words is "six hundred sixty-nine thousand, five hundred eighty-three".