1013785 has 4 divisors (see below), whose sum is σ = 1216548. Its totient is φ = 811024.

The previous prime is 1013773. The next prime is 1013791. The reversal of 1013785 is 5873101.

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 746496 + 267289 = 864^2 + 517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013785 - 2¹¹ = 1011737 is a prime.

It is a Duffinian number.

1013785 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101374 + ... + 101383.

It is an arithmetic number, because the mean of its divisors is an integer number (304137).

2^1013785 is an apocalyptic number.

It is an amenable number.

1013785 is a deficient number, since it is larger than the sum of its proper divisors (202763).

1013785 is an equidigital number, since it uses as much as digits as its factorization.

1013785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202762.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1013785 is about 1006.8689090443. The cubic root of 1013785 is about 100.4574046202.

Adding to 1013785 its reverse (5873101), we get a palindrome (6886886).

The spelling of 1013785 in words is "one million, thirteen thousand, seven hundred eighty-five".