669920984013248 has 672 divisors, whose sum is σ = 1606260754391040. Its totient is φ = 274099956480000.

The previous prime is 669920984013241. The next prime is 669920984013299. The reversal of 669920984013248 is 842310489029966.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669920984013241) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 240029014733 + ... + 240029017523.

Almost surely, 2^{669920984013248} 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 669920984013248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803130377195520).

669920984013248 is an abundant number, since it is smaller than the sum of its proper divisors (936339770377792).

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

669920984013248 is a wasteful number, since it uses less digits than its factorization.

669920984013248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229 (or 3188 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 71.

The spelling of 669920984013248 in words is "six hundred sixty-nine trillion, nine hundred twenty billion, nine hundred eighty-four million, thirteen thousand, two hundred forty-eight".