667896382608 has 320 divisors, whose sum is σ = 2183143936512. Its totient is φ = 171216322560.

The previous prime is 667896382579. The next prime is 667896382613. The reversal of 667896382608 is 806283698766.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 273614668 + ... + 273617108.

Almost surely, 2^667896382608 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 667896382608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091571968256).

667896382608 is an abundant number, since it is smaller than the sum of its proper divisors (1515247553904).

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

667896382608 is a wasteful number, since it uses less digits than its factorization.

667896382608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202 (or 4196 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 69.

The spelling of 667896382608 in words is "six hundred sixty-seven billion, eight hundred ninety-six million, three hundred eighty-two thousand, six hundred eight".