669459632 has 40 divisors (see below), whose sum is σ = 1346497152. Its totient is φ = 322099200.

The previous prime is 669459629. The next prime is 669459653. The reversal of 669459632 is 236954966.

669459632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86048 + ... + 93504.

Almost surely, 2^669459632 is an apocalyptic number.

669459632 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669459632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673248576).

669459632 is an abundant number, since it is smaller than the sum of its proper divisors (677037520).

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

669459632 is a wasteful number, since it uses less digits than its factorization.

669459632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677 (or 7671 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 50.

The square root of 669459632 is about 25873.9179870386. The cubic root of 669459632 is about 874.7987050423.

The spelling of 669459632 in words is "six hundred sixty-nine million, four hundred fifty-nine thousand, six hundred thirty-two".