669484170 has 64 divisors (see below), whose sum is σ = 1797223680. Its totient is φ = 177336000.

The previous prime is 669484159. The next prime is 669484177. The reversal of 669484170 is 71484966.

669484170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (669484177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32560 + ... + 48980.

It is an arithmetic number, because the mean of its divisors is an integer number (28081620).

Almost surely, 2^669484170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669484170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898611840).

669484170 is an abundant number, since it is smaller than the sum of its proper divisors (1127739510).

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

669484170 is a wasteful number, since it uses less digits than its factorization.

669484170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16588 (or 16582 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 669484170 is about 25874.3921667737. The cubic root of 669484170 is about 874.8093930397.

The spelling of 669484170 in words is "six hundred sixty-nine million, four hundred eighty-four thousand, one hundred seventy".