669121032 has 32 divisors (see below), whose sum is σ = 1675893600. Its totient is φ = 222628224.

The previous prime is 669121021. The next prime is 669121039. The reversal of 669121032 is 230121966.

669121032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669121039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12357 + ... + 38612.

It is an arithmetic number, because the mean of its divisors is an integer number (52371675).

Almost surely, 2^669121032 is an apocalyptic number.

It is an amenable number.

669121032 is an abundant number, since it is smaller than the sum of its proper divisors (1006772568).

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

669121032 is a wasteful number, since it uses less digits than its factorization.

669121032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51525 (or 51521 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 669121032 is about 25867.3738906755. The cubic root of 669121032 is about 874.6511946324.

Adding to 669121032 its reverse (230121966), we get a palindrome (899242998).

The spelling of 669121032 in words is "six hundred sixty-nine million, one hundred twenty-one thousand, thirty-two".