669822432 has 24 divisors (see below), whose sum is σ = 1758284136. Its totient is φ = 223274112.

The previous prime is 669822431. The next prime is 669822437. The reversal of 669822432 is 234228966.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669822431) 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, 3488563 + ... + 3488754.

It is an arithmetic number, because the mean of its divisors is an integer number (73261839).

Almost surely, 2^669822432 is an apocalyptic number.

It is an amenable number.

669822432 is an abundant number, since it is smaller than the sum of its proper divisors (1088461704).

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

669822432 is a wasteful number, since it uses less digits than its factorization.

669822432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6977330 (or 6977322 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 669822432 is about 25880.9279586339. The cubic root of 669822432 is about 874.9567029460.

The spelling of 669822432 in words is "six hundred sixty-nine million, eight hundred twenty-two thousand, four hundred thirty-two".