669202386684 has 108 divisors (see below), whose sum is σ = 1747132237368. Its totient is φ = 199265639040.

The previous prime is 669202386683. The next prime is 669202386719. The reversal of 669202386684 is 486683202966.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669202386683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1777222 + ... + 2120594.

It is an arithmetic number, because the mean of its divisors is an integer number (16177150346).

Almost surely, 2^669202386684 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 669202386684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873566118684).

669202386684 is an abundant number, since it is smaller than the sum of its proper divisors (1077929850684).

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

669202386684 is a wasteful number, since it uses less digits than its factorization.

669202386684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343468 (or 343422 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 60.

The spelling of 669202386684 in words is "six hundred sixty-nine billion, two hundred two million, three hundred eighty-six thousand, six hundred eighty-four".