666010116 has 72 divisors (see below), whose sum is σ = 1809924480. Its totient is φ = 205834176.

The previous prime is 666010099. The next prime is 666010127. The reversal of 666010116 is 611010666.

It is a super-2 number, since 2×666010116² = 887138949228666912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666010116.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21790 + ... + 42506.

It is an arithmetic number, because the mean of its divisors is an integer number (25137840).

Almost surely, 2^666010116 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 666010116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904962240).

666010116 is an abundant number, since it is smaller than the sum of its proper divisors (1143914364).

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

666010116 is a wasteful number, since it uses less digits than its factorization.

666010116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20793 (or 20788 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 666010116 is about 25807.1717939026. The cubic root of 666010116 is about 873.2935956254.

The spelling of 666010116 in words is "six hundred sixty-six million, ten thousand, one hundred sixteen".