1116661 has 12 divisors (see below), whose sum is σ = 1399692. Its totient is φ = 883008.

The previous prime is 1116659. The next prime is 1116677. The reversal of 1116661 is 1666111.

It can be written as a sum of positive squares in 2 ways, for example, as 86436 + 1030225 = 294^2 + 1015^2 .

It is not a de Polignac number, because 1116661 - 2¹ = 1116659 is a prime.

1116661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (116641).

2^1116661 is an apocalyptic number.

It is an amenable number.

1116661 is a deficient number, since it is larger than the sum of its proper divisors (283031).

1116661 is a wasteful number, since it uses less digits than its factorization.

1116661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780 (or 1773 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 1116661 is about 1056.7218176985. The cubic root of 1116661 is about 103.7465784907.

Multiplying 1116661 by its sum of digits (22), we get a palindrome (24566542).

The spelling of 1116661 in words is "one million, one hundred sixteen thousand, six hundred sixty-one".