1166066616 has 128 divisors (see below), whose sum is σ = 3498163200. Its totient is φ = 319188480.

The previous prime is 1166066611. The next prime is 1166066639. The reversal of 1166066616 is 6166606611.

It is a happy number.

It is a super-2 number, since 2×1166066616² = 2719422705899382912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166066611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157690 + ... + 164918.

It is an arithmetic number, because the mean of its divisors is an integer number (27329400).

Almost surely, 2^1166066616 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 1166066616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749081600).

1166066616 is an abundant number, since it is smaller than the sum of its proper divisors (2332096584).

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

1166066616 is a wasteful number, since it uses less digits than its factorization.

1166066616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309 (or 7305 counting only the distinct ones).

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

The square root of 1166066616 is about 34147.7175811210. The cubic root of 1166066616 is about 1052.5460860015.

The spelling of 1166066616 in words is "one billion, one hundred sixty-six million, sixty-six thousand, six hundred sixteen".