1365540 has 48 divisors (see below), whose sum is σ = 4173120. Its totient is φ = 330880.

The previous prime is 1365503. The next prime is 1365547. The reversal of 1365540 is 455631.

It is a self number, because there is not a number n which added to its sum of digits gives 1365540.

It is not an unprimeable number, because it can be changed into a prime (1365547) 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, 375 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (86940).

2^1365540 is an apocalyptic number.

1365540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1365540 is an abundant number, since it is smaller than the sum of its proper divisors (2807580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1365540 is a wasteful number, since it uses less digits than its factorization.

1365540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2090 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1365540 is about 1168.5632203694. The cubic root of 1365540 is about 110.9434010615.

Subtracting from 1365540 its reverse (455631), we obtain a palindrome (909909).

It can be divided in two parts, 13655 and 40, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 1365540 in words is "one million, three hundred sixty-five thousand, five hundred forty".