666675576666 has 48 divisors (see below), whose sum is σ = 1579893120000. Its totient is φ = 201495404160.

The previous prime is 666675576649. The next prime is 666675576667.

666675576666 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 666675576594 and 666675576603.

It is not an unprimeable number, because it can be changed into a prime (666675576667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4319791 + ... + 4471458.

It is an arithmetic number, because the mean of its divisors is an integer number (32914440000).

Almost surely, 2^666675576666 is an apocalyptic number.

666675576666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

666675576666 is an abundant number, since it is smaller than the sum of its proper divisors (913217543334).

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

666675576666 is a wasteful number, since it uses less digits than its factorization.

666675576666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8791651 (or 8791648 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 72.

The spelling of 666675576666 in words is "six hundred sixty-six billion, six hundred seventy-five million, five hundred seventy-six thousand, six hundred sixty-six".