670443676668 has 144 divisors (see below), whose sum is σ = 1766564601984. Its totient is φ = 222331314240.

The previous prime is 670443676667. The next prime is 670443676703. The reversal of 670443676668 is 866676344076.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670443676663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222663283 + ... + 222666293.

It is an arithmetic number, because the mean of its divisors is an integer number (12267809736).

Almost surely, 2^670443676668 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 670443676668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883282300992).

670443676668 is an abundant number, since it is smaller than the sum of its proper divisors (1096120925316).

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

670443676668 is a wasteful number, since it uses less digits than its factorization.

670443676668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134 (or 4120 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 63.

The spelling of 670443676668 in words is "six hundred seventy billion, four hundred forty-three million, six hundred seventy-six thousand, six hundred sixty-eight".