669133824 has 88 divisors (see below), whose sum is σ = 1810661568. Its totient is φ = 219648000.

The previous prime is 669133747. The next prime is 669133831. The reversal of 669133824 is 428331966.

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 7 ways as a sum of consecutive naturals, for example, 204199 + ... + 207449.

Almost surely, 2^669133824 is an apocalyptic number.

669133824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669133824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905330784).

669133824 is an abundant number, since it is smaller than the sum of its proper divisors (1141527744).

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

669133824 is a wasteful number, since it uses less digits than its factorization.

669133824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341 (or 3323 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 669133824 is about 25867.6211507746. The cubic root of 669133824 is about 874.6567683459.

The spelling of 669133824 in words is "six hundred sixty-nine million, one hundred thirty-three thousand, eight hundred twenty-four".