669719232 has 224 divisors, whose sum is σ = 2423769600. Its totient is φ = 176587776.

The previous prime is 669719227. The next prime is 669719249. The reversal of 669719232 is 232917966.

It is a happy number.

669719232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155119 + ... + 159377.

It is an arithmetic number, because the mean of its divisors is an integer number (10820400).

Almost surely, 2^669719232 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 669719232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1211884800).

669719232 is an abundant number, since it is smaller than the sum of its proper divisors (1754050368).

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

669719232 is a wasteful number, since it uses less digits than its factorization.

669719232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4284 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 669719232 is about 25878.9341357020. The cubic root of 669719232 is about 874.9117655790.

The spelling of 669719232 in words is "six hundred sixty-nine million, seven hundred nineteen thousand, two hundred thirty-two".