666226684200 has 384 divisors, whose sum is σ = 2644522168320. Its totient is φ = 134694835200.

The previous prime is 666226684199. The next prime is 666226684223. The reversal of 666226684200 is 2486622666.

It is a self number, because there is not a number n which added to its sum of digits gives 666226684200.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1514529 + ... + 1904271.

It is an arithmetic number, because the mean of its divisors is an integer number (6886776480).

Almost surely, 2^666226684200 is an apocalyptic number.

666226684200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666226684200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1322261084160).

666226684200 is an abundant number, since it is smaller than the sum of its proper divisors (1978295484120).

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

666226684200 is a wasteful number, since it uses less digits than its factorization.

666226684200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389817 (or 389808 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 666226684200 in words is "six hundred sixty-six billion, two hundred twenty-six million, six hundred eighty-four thousand, two hundred".