1111861 has 8 divisors (see below), whose sum is σ = 1181600. Its totient is φ = 1043280.

The previous prime is 1111853. The next prime is 1111867. The reversal of 1111861 is 1681111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111861 - 2³ = 1111853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431 + ... + 2851.

It is an arithmetic number, because the mean of its divisors is an integer number (147700).

2^1111861 is an apocalyptic number.

It is an amenable number.

1111861 is a deficient number, since it is larger than the sum of its proper divisors (69739).

1111861 is a wasteful number, since it uses less digits than its factorization.

1111861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its digits is 48, while the sum is 19.

The square root of 1111861 is about 1054.4481969258. The cubic root of 1111861 is about 103.5977124165.

Adding to 1111861 its reverse (1681111), we get a palindrome (2792972).

The spelling of 1111861 in words is "one million, one hundred eleven thousand, eight hundred sixty-one".