669132288 has 240 divisors, whose sum is σ = 2162736576. Its totient is φ = 197406720.

The previous prime is 669132281. The next prime is 669132301. The reversal of 669132288 is 882231966.

It is a super-2 number, since 2×669132288² = 895476037688229888, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669132281) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2179431 + ... + 2179737.

Almost surely, 2^669132288 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 669132288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081368288).

669132288 is an abundant number, since it is smaller than the sum of its proper divisors (1493604288).

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

669132288 is a wasteful number, since it uses less digits than its factorization.

669132288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 366 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 669132288 is about 25867.5914611314. The cubic root of 669132288 is about 874.6560990858.

The spelling of 669132288 in words is "six hundred sixty-nine million, one hundred thirty-two thousand, two hundred eighty-eight".