666975833620 has 24 divisors (see below), whose sum is σ = 1400691852000. Its totient is φ = 266782218912.

The previous prime is 666975833593. The next prime is 666975833687. The reversal of 666975833620 is 26338579666.

666975833620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190231 + ... + 1170529.

It is an arithmetic number, because the mean of its divisors is an integer number (58362160500).

Almost surely, 2^666975833620 is an apocalyptic number.

It is an amenable number.

666975833620 is an abundant number, since it is smaller than the sum of its proper divisors (733716018380).

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

666975833620 is a wasteful number, since it uses less digits than its factorization.

666975833620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014327 (or 1014325 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 61.

The spelling of 666975833620 in words is "six hundred sixty-six billion, nine hundred seventy-five million, eight hundred thirty-three thousand, six hundred twenty".