669652327 has 4 divisors (see below), whose sum is σ = 680630296. Its totient is φ = 658674360.

The previous prime is 669652309. The next prime is 669652367. The reversal of 669652327 is 723256966.

It is a happy number.

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 669652327 - 2¹¹ = 669650279 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 (669652367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5488893 + ... + 5489014.

It is an arithmetic number, because the mean of its divisors is an integer number (170157574).

Almost surely, 2^669652327 is an apocalyptic number.

669652327 is a deficient number, since it is larger than the sum of its proper divisors (10977969).

669652327 is a wasteful number, since it uses less digits than its factorization.

669652327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10977968.

The product of its digits is 816480, while the sum is 46.

The square root of 669652327 is about 25877.6414497148. The cubic root of 669652327 is about 874.8826300257.

The spelling of 669652327 in words is "six hundred sixty-nine million, six hundred fifty-two thousand, three hundred twenty-seven".