1056865 has 4 divisors (see below), whose sum is σ = 1268244. Its totient is φ = 845488.

The previous prime is 1056863. The next prime is 1056871. The reversal of 1056865 is 5686501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 389376 + 667489 = 624^2 + 817^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056865 - 2¹ = 1056863 is a prime.

It is a super-2 number, since 2×1056865² = 2233927256450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105682 + ... + 105691.

It is an arithmetic number, because the mean of its divisors is an integer number (317061).

2^1056865 is an apocalyptic number.

It is an amenable number.

1056865 is a deficient number, since it is larger than the sum of its proper divisors (211379).

1056865 is an equidigital number, since it uses as much as digits as its factorization.

1056865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211378.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1056865 is about 1028.0393961323. The cubic root of 1056865 is about 101.8606645492.

The spelling of 1056865 in words is "one million, fifty-six thousand, eight hundred sixty-five".