13776013 has 4 divisors (see below), whose sum is σ = 13846140. Its totient is φ = 13705888.

The previous prime is 13775999. The next prime is 13776017. The reversal of 13776013 is 31067731.

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 6901129 + 6874884 = 2627^2 + 2622^2 .

It is a cyclic number.

It is not a de Polignac number, because 13776013 - 2¹³ = 13767821 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 (13776017) 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 3 ways as a sum of consecutive naturals, for example, 34768 + ... + 35161.

It is an arithmetic number, because the mean of its divisors is an integer number (3461535).

Almost surely, 2^13776013 is an apocalyptic number.

It is an amenable number.

13776013 is a deficient number, since it is larger than the sum of its proper divisors (70127).

13776013 is an equidigital number, since it uses as much as digits as its factorization.

13776013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70126.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 13776013 is about 3711.6051783561. The cubic root of 13776013 is about 239.7219755047.

The spelling of 13776013 in words is "thirteen million, seven hundred seventy-six thousand, thirteen".