669714913280 has 384 divisors, whose sum is σ = 1942226657280. Its totient is φ = 216760320000.

The previous prime is 669714913243. The next prime is 669714913333. The reversal of 669714913280 is 82319417966.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 91101605 + ... + 91108955.

It is an arithmetic number, because the mean of its divisors is an integer number (5057881920).

Almost surely, 2^669714913280 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 669714913280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971113328640).

669714913280 is an abundant number, since it is smaller than the sum of its proper divisors (1272511744000).

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

669714913280 is a wasteful number, since it uses less digits than its factorization.

669714913280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457 (or 7437 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 669714913280 in words is "six hundred sixty-nine billion, seven hundred fourteen million, nine hundred thirteen thousand, two hundred eighty".