1165887 has 16 divisors (see below), whose sum is σ = 1788000. Its totient is φ = 749952.

The previous prime is 1165873. The next prime is 1165889. The reversal of 1165887 is 7885611.

It is not a de Polignac number, because 1165887 - 2⁶ = 1165823 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

1165887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (111750).

2^1165887 is an apocalyptic number.

1165887 is a deficient number, since it is larger than the sum of its proper divisors (622113).

1165887 is a wasteful number, since it uses less digits than its factorization.

1165887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1521 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 1165887 is about 1079.7624738803. The cubic root of 1165887 is about 105.2492039968.

The spelling of 1165887 in words is "one million, one hundred sixty-five thousand, eight hundred eighty-seven".