667340740008 has 80 divisors (see below), whose sum is σ = 1870279113780. Its totient is φ = 222315155712.

The previous prime is 667340739983. The next prime is 667340740133. The reversal of 667340740008 is 800047043766.

It can be written as a sum of positive squares in 2 ways, for example, as 643649989284 + 23690750724 = 802278^2 + 153918^2 .

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 19 ways as a sum of consecutive naturals, for example, 792916 + ... + 1401212.

Almost surely, 2^667340740008 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 667340740008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935139556890).

667340740008 is an abundant number, since it is smaller than the sum of its proper divisors (1202938373772).

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

667340740008 is a wasteful number, since it uses less digits than its factorization.

667340740008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610008 (or 609995 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 667340740008 in words is "six hundred sixty-seven billion, three hundred forty million, seven hundred forty thousand, eight".