667986473304 has 112 divisors (see below), whose sum is σ = 1892189839320. Its totient is φ = 220962193920.

The previous prime is 667986473293. The next prime is 667986473311. The reversal of 667986473304 is 403374689766.

667986473304 is a `hidden beast` number, since 66 + 79 + 8 + 6 + 473 + 30 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 326824 + ... + 1201160.

Almost surely, 2^667986473304 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 667986473304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946094919660).

667986473304 is an abundant number, since it is smaller than the sum of its proper divisors (1224203366016).

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

667986473304 is a wasteful number, since it uses less digits than its factorization.

667986473304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874492 (or 874473 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 63.

The spelling of 667986473304 in words is "six hundred sixty-seven billion, nine hundred eighty-six million, four hundred seventy-three thousand, three hundred four".