1168861 has 4 divisors (see below), whose sum is σ = 1230400. Its totient is φ = 1107324.

The previous prime is 1168859. The next prime is 1168877. The reversal of 1168861 is 1688611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1688611 = 401 ⋅4211.

It is a cyclic number.

It is not a de Polignac number, because 1168861 - 2¹ = 1168859 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30741 + ... + 30778.

It is an arithmetic number, because the mean of its divisors is an integer number (307600).

2^1168861 is an apocalyptic number.

1168861 is the 484-th centered decagonal number.

It is an amenable number.

1168861 is a deficient number, since it is larger than the sum of its proper divisors (61539).

1168861 is an equidigital number, since it uses as much as digits as its factorization.

1168861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61538.

The product of its digits is 2304, while the sum is 31.

The square root of 1168861 is about 1081.1387515023. The cubic root of 1168861 is about 105.3386195695.

The spelling of 1168861 in words is "one million, one hundred sixty-eight thousand, eight hundred sixty-one".