1116641 has 2 divisors, whose sum is σ = 1116642. Its totient is φ = 1116640.

The previous prime is 1116637. The next prime is 1116653. The reversal of 1116641 is 1466111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 633616 + 483025 = 796^2 + 695^2 .

It is an emirp because it is prime and its reverse (1466111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1116641 - 2² = 1116637 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1116601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558320 + 558321.

It is an arithmetic number, because the mean of its divisors is an integer number (558321).

2^1116641 is an apocalyptic number.

It is an amenable number.

1116641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116641 is an equidigital number, since it uses as much as digits as its factorization.

1116641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1116641 is about 1056.7123544276. The cubic root of 1116641 is about 103.7459591013.

The spelling of 1116641 in words is "one million, one hundred sixteen thousand, six hundred forty-one".