1163887 has 4 divisors (see below), whose sum is σ = 1168776. Its totient is φ = 1159000.

The previous prime is 1163879. The next prime is 1163891. The reversal of 1163887 is 7883611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1163887 - 2³ = 1163879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068 + ... + 2569.

It is an arithmetic number, because the mean of its divisors is an integer number (292194).

2^1163887 is an apocalyptic number.

1163887 is a deficient number, since it is larger than the sum of its proper divisors (4889).

1163887 is an equidigital number, since it uses as much as digits as its factorization.

1163887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888.

The product of its digits is 8064, while the sum is 34.

The square root of 1163887 is about 1078.8359467500. The cubic root of 1163887 is about 105.1889869294.

The spelling of 1163887 in words is "one million, one hundred sixty-three thousand, eight hundred eighty-seven".