1166616066 has 64 divisors (see below), whose sum is σ = 2948898816. Its totient is φ = 298857600.

The previous prime is 1166616049. The next prime is 1166616071. The reversal of 1166616066 is 6606166611.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16431 + ... + 51021.

It is an arithmetic number, because the mean of its divisors is an integer number (46076544).

Almost surely, 2^1166616066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166616066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474449408).

1166616066 is an abundant number, since it is smaller than the sum of its proper divisors (1782282750).

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

1166616066 is a wasteful number, since it uses less digits than its factorization.

1166616066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34687.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1166616066 is about 34155.7618272525. The cubic root of 1166616066 is about 1052.7113797700.

The spelling of 1166616066 in words is "one billion, one hundred sixty-six million, six hundred sixteen thousand, sixty-six".