13786945 has 8 divisors (see below), whose sum is σ = 16617960. Its totient is φ = 10980480.

The previous prime is 13786937. The next prime is 13786957. The reversal of 13786945 is 54968731.

13786945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5049009 + 8737936 = 2247^2 + 2956^2 .

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

It is not a de Polignac number, because 13786945 - 2³ = 13786937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (2077245).

Almost surely, 2^13786945 is an apocalyptic number.

It is an amenable number.

13786945 is a deficient number, since it is larger than the sum of its proper divisors (2831015).

13786945 is a wasteful number, since it uses less digits than its factorization.

13786945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275.

The product of its digits is 181440, while the sum is 43.

The square root of 13786945 is about 3713.0775645009. The cubic root of 13786945 is about 239.7853694570.

The spelling of 13786945 in words is "thirteen million, seven hundred eighty-six thousand, nine hundred forty-five".