1669663072 has 96 divisors (see below), whose sum is σ = 4120671744. Its totient is φ = 646963200.

The previous prime is 1669663001. The next prime is 1669663087. The reversal of 1669663072 is 2703669661.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 473797 + ... + 477307.

It is an arithmetic number, because the mean of its divisors is an integer number (42923664).

Almost surely, 2^1669663072 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 1669663072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060335872).

1669663072 is an abundant number, since it is smaller than the sum of its proper divisors (2451008672).

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

1669663072 is a wasteful number, since it uses less digits than its factorization.

1669663072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732 (or 3724 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 1669663072 is about 40861.5108873864. The cubic root of 1669663072 is about 1186.3412023877.

The spelling of 1669663072 in words is "one billion, six hundred sixty-nine million, six hundred sixty-three thousand, seventy-two".