669775032 has 24 divisors (see below), whose sum is σ = 1813974240. Its totient is φ = 223258320.

The previous prime is 669775003. The next prime is 669775033. The reversal of 669775032 is 230577966.

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 (669775033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4651144 + ... + 4651287.

It is an arithmetic number, because the mean of its divisors is an integer number (75582260).

Almost surely, 2^669775032 is an apocalyptic number.

It is an amenable number.

669775032 is an abundant number, since it is smaller than the sum of its proper divisors (1144199208).

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

669775032 is a wasteful number, since it uses less digits than its factorization.

669775032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9302443 (or 9302436 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The square root of 669775032 is about 25880.0122101980. The cubic root of 669775032 is about 874.9360636820.

The spelling of 669775032 in words is "six hundred sixty-nine million, seven hundred seventy-five thousand, thirty-two".