669605333280 has 384 divisors, whose sum is σ = 2434349127168. Its totient is φ = 153397297152.

The previous prime is 669605333273. The next prime is 669605333339. The reversal of 669605333280 is 82333506966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5247192 + ... + 5373288.

It is an arithmetic number, because the mean of its divisors is an integer number (6339450852).

Almost surely, 2^669605333280 is an apocalyptic number.

669605333280 is a gapful number since it is divisible by the number (60) 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 669605333280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1217174563584).

669605333280 is an abundant number, since it is smaller than the sum of its proper divisors (1764743793888).

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

669605333280 is a wasteful number, since it uses less digits than its factorization.

669605333280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126188 (or 126180 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 51.

The spelling of 669605333280 in words is "six hundred sixty-nine billion, six hundred five million, three hundred thirty-three thousand, two hundred eighty".