669190984 has 96 divisors (see below), whose sum is σ = 1603022400. Its totient is φ = 256291200.

The previous prime is 669190961. The next prime is 669190999. The reversal of 669190984 is 489091966.

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, 412527 + ... + 414145.

It is an arithmetic number, because the mean of its divisors is an integer number (16698150).

Almost surely, 2^669190984 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 669190984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801511200).

669190984 is an abundant number, since it is smaller than the sum of its proper divisors (933831416).

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

669190984 is a wasteful number, since it uses less digits than its factorization.

669190984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 669190984 is about 25868.7259833182. The cubic root of 669190984 is about 874.6816731584.

The spelling of 669190984 in words is "six hundred sixty-nine million, one hundred ninety thousand, nine hundred eighty-four".