666066200 has 96 divisors (see below), whose sum is σ = 1671991200. Its totient is φ = 246005760.

The previous prime is 666066179. The next prime is 666066221. The reversal of 666066200 is 2660666.

It is an interprime number because it is at equal distance from previous prime (666066179) and next prime (666066221).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130904 + ... + 135896.

It is an arithmetic number, because the mean of its divisors is an integer number (17416575).

Almost surely, 2^666066200 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 666066200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835995600).

666066200 is an abundant number, since it is smaller than the sum of its proper divisors (1005925000).

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

666066200 is a wasteful number, since it uses less digits than its factorization.

666066200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 666066200 is about 25808.2583682045. The cubic root of 666066200 is about 873.3181079774.

The spelling of 666066200 in words is "six hundred sixty-six million, sixty-six thousand, two hundred".