13812775 has 6 divisors (see below), whose sum is σ = 17127872. Its totient is φ = 11050200.

The previous prime is 13812767. The next prime is 13812793. The reversal of 13812775 is 57721831.

It is not a de Polignac number, because 13812775 - 2³ = 13812767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13812775.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 276231 + ... + 276280.

Almost surely, 2^13812775 is an apocalyptic number.

13812775 is a deficient number, since it is larger than the sum of its proper divisors (3315097).

13812775 is an equidigital number, since it uses as much as digits as its factorization.

13812775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552521 (or 552516 counting only the distinct ones).

The product of its digits is 11760, while the sum is 34.

The square root of 13812775 is about 3716.5541836492. The cubic root of 13812775 is about 239.9350229191.

The spelling of 13812775 in words is "thirteen million, eight hundred twelve thousand, seven hundred seventy-five".