1365385 has 12 divisors (see below), whose sum is σ = 1906308. Its totient is φ = 936096.

The previous prime is 1365383. The next prime is 1365431. The reversal of 1365385 is 5835631.

1365385 = 365² + 366² + ... + 374².

It can be written as a sum of positive squares in 2 ways, for example, as 233289 + 1132096 = 483^2 + 1064^2 .

It is not a de Polignac number, because 1365385 - 2¹ = 1365383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1365383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2542 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (158859).

2^1365385 is an apocalyptic number.

It is an amenable number.

1365385 is a deficient number, since it is larger than the sum of its proper divisors (540923).

1365385 is an equidigital number, since it uses as much as digits as its factorization.

1365385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5585 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 1365385 is about 1168.4968977280. The cubic root of 1365385 is about 110.9392032404.

It can be divided in two parts, 1365 and 385, that multiplied together give a palindrome (525525).

The spelling of 1365385 in words is "one million, three hundred sixty-five thousand, three hundred eighty-five".