1012865 has 16 divisors (see below), whose sum is σ = 1423488. Its totient is φ = 677376.

The previous prime is 1012861. The next prime is 1012903. The reversal of 1012865 is 5682101.

1012865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1012865 - 2² = 1012861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012865.

It is not an unprimeable number, because it can be changed into a prime (1012861) 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, 1169 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (88968).

2^1012865 is an apocalyptic number.

It is an amenable number.

1012865 is a deficient number, since it is larger than the sum of its proper divisors (410623).

1012865 is an equidigital number, since it uses as much as digits as its factorization.

1012865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1012865 is about 1006.4119434903. The cubic root of 1012865 is about 100.4270073850.

Adding to 1012865 its reverse (5682101), we get a palindrome (6694966).

The spelling of 1012865 in words is "one million, twelve thousand, eight hundred sixty-five".