669585500 has 48 divisors (see below), whose sum is σ = 1493541504. Its totient is φ = 262126400.

The previous prime is 669585481. The next prime is 669585503. The reversal of 669585500 is 5585966.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669585503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9254 + ... + 37746.

It is an arithmetic number, because the mean of its divisors is an integer number (31115448).

Almost surely, 2^669585500 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 669585500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746770752).

669585500 is an abundant number, since it is smaller than the sum of its proper divisors (823956004).

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

669585500 is a wasteful number, since it uses less digits than its factorization.

669585500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28559 (or 28547 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The square root of 669585500 is about 25876.3502063177. The cubic root of 669585500 is about 874.8535265024.

The spelling of 669585500 in words is "six hundred sixty-nine million, five hundred eighty-five thousand, five hundred".