669852594 has 24 divisors (see below), whose sum is σ = 1452065472. Its totient is φ = 223173720.

The previous prime is 669852593. The next prime is 669852607. The reversal of 669852594 is 495258966.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 669852594.

It is not an unprimeable number, because it can be changed into a prime (669852593) 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 11 ways as a sum of consecutive naturals, for example, 33547 + ... + 49649.

It is an arithmetic number, because the mean of its divisors is an integer number (60502728).

Almost surely, 2^669852594 is an apocalyptic number.

669852594 is an abundant number, since it is smaller than the sum of its proper divisors (782212878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669852594 is a wasteful number, since it uses less digits than its factorization.

669852594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18422 (or 18419 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 669852594 is about 25881.5106591559. The cubic root of 669852594 is about 874.9698358037.

The spelling of 669852594 in words is "six hundred sixty-nine million, eight hundred fifty-two thousand, five hundred ninety-four".