669054700 has 72 divisors (see below), whose sum is σ = 1481936400. Its totient is φ = 262137600.

The previous prime is 669054691. The next prime is 669054719. The reversal of 669054700 is 7450966.

It is a self number, because there is not a number n which added to its sum of digits gives 669054700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1236430 + ... + 1236970.

It is an arithmetic number, because the mean of its divisors is an integer number (20582450).

Almost surely, 2^669054700 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 669054700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740968200).

669054700 is an abundant number, since it is smaller than the sum of its proper divisors (812881700).

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

669054700 is a wasteful number, since it uses less digits than its factorization.

669054700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 669054700 is about 25866.0917032319. The cubic root of 669054700 is about 874.6222914009.

The spelling of 669054700 in words is "six hundred sixty-nine million, fifty-four thousand, seven hundred".