669272589 has 6 divisors (see below), whose sum is σ = 966727086. Its totient is φ = 446181720.

The previous prime is 669272543. The next prime is 669272599. The reversal of 669272589 is 985272966.

It can be written as a sum of positive squares in only one way, i.e., 436099689 + 233172900 = 20883^2 + 15270^2 .

It is not a de Polignac number, because 669272589 - 2⁸ = 669272333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669272599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37181802 + ... + 37181819.

It is an arithmetic number, because the mean of its divisors is an integer number (161121181).

Almost surely, 2^669272589 is an apocalyptic number.

It is an amenable number.

669272589 is a deficient number, since it is larger than the sum of its proper divisors (297454497).

669272589 is a wasteful number, since it uses less digits than its factorization.

669272589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74363627 (or 74363624 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 669272589 is about 25870.3032258998. The cubic root of 669272589 is about 874.7172262857.

The spelling of 669272589 in words is "six hundred sixty-nine million, two hundred seventy-two thousand, five hundred eighty-nine".