13768861 has 8 divisors (see below), whose sum is σ = 14611320. Its totient is φ = 12930048.

The previous prime is 13768849. The next prime is 13768871. The reversal of 13768861 is 16886731.

It can be written as a sum of positive squares in 4 ways, for example, as 7672900 + 6095961 = 2770^2 + 2469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13768861 - 2¹¹ = 13766813 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 (13768841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13605 + ... + 14581.

It is an arithmetic number, because the mean of its divisors is an integer number (1826415).

Almost surely, 2^13768861 is an apocalyptic number.

It is an amenable number.

13768861 is a deficient number, since it is larger than the sum of its proper divisors (842459).

13768861 is an equidigital number, since it uses as much as digits as its factorization.

13768861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 48384, while the sum is 40.

The square root of 13768861 is about 3710.6415887283. The cubic root of 13768861 is about 239.6804833749.

The spelling of 13768861 in words is "thirteen million, seven hundred sixty-eight thousand, eight hundred sixty-one".