1140865 has 8 divisors (see below), whose sum is σ = 1493568. Its totient is φ = 829680.

The previous prime is 1140863. The next prime is 1140871. The reversal of 1140865 is 5680411.

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

It is not a de Polignac number, because 1140865 - 2¹ = 1140863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10317 + ... + 10426.

It is an arithmetic number, because the mean of its divisors is an integer number (186696).

2^1140865 is an apocalyptic number.

It is an amenable number.

1140865 is a deficient number, since it is larger than the sum of its proper divisors (352703).

1140865 is a wasteful number, since it uses less digits than its factorization.

1140865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20759.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1140865 is about 1068.1128217562. The cubic root of 1140865 is about 104.4908075520.

The spelling of 1140865 in words is "one million, one hundred forty thousand, eight hundred sixty-five".