1366885 has 16 divisors (see below), whose sum is σ = 1871856. Its totient is φ = 949248.

The previous prime is 1366877. The next prime is 1366889. The reversal of 1366885 is 5886631.

1366885 is nontrivially palindromic in base 2.

It can be written as a sum of positive squares in 8 ways, for example, as 324 + 1366561 = 18^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366885 - 2³ = 1366877 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 (1366889) 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, 487 + ... + 1723.

It is an arithmetic number, because the mean of its divisors is an integer number (116991).

2^1366885 is an apocalyptic number.

It is an amenable number.

1366885 is a deficient number, since it is larger than the sum of its proper divisors (504971).

1366885 is a wasteful number, since it uses less digits than its factorization.

1366885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272.

The product of its digits is 34560, while the sum is 37.

The square root of 1366885 is about 1169.1385717698. The cubic root of 1366885 is about 110.9798139848.

It can be divided in two parts, 136 and 6885, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 1366885 in words is "one million, three hundred sixty-six thousand, eight hundred eighty-five".