669102080 has 104 divisors (see below), whose sum is σ = 1650912432. Its totient is φ = 260112384.

The previous prime is 669101977. The next prime is 669102097. The reversal of 669102080 is 80201966.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757319 + ... + 758201.

It is an arithmetic number, because the mean of its divisors is an integer number (15874158).

Almost surely, 2^669102080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669102080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (825456216).

669102080 is an abundant number, since it is smaller than the sum of its proper divisors (981810352).

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

669102080 is an equidigital number, since it uses as much as digits as its factorization.

669102080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 669102080 is about 25867.0075578912. The cubic root of 669102080 is about 874.6429367612.

The spelling of 669102080 in words is "six hundred sixty-nine million, one hundred two thousand, eighty".