13375647 has 6 divisors (see below), whose sum is σ = 19320392. Its totient is φ = 8917092.

The previous prime is 13375643. The next prime is 13375657. The reversal of 13375647 is 74657331.

13375647 is a `hidden beast` number, since 1 + 3 + 3 + 7 + 5 + 647 = 666.

13375647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13375647 - 2² = 13375643 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 (13375643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743083 + ... + 743100.

Almost surely, 2^13375647 is an apocalyptic number.

13375647 is a deficient number, since it is larger than the sum of its proper divisors (5944745).

13375647 is a wasteful number, since it uses less digits than its factorization.

13375647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486189 (or 1486186 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 13375647 is about 3657.2731645312. The cubic root of 13375647 is about 237.3767974112.

The spelling of 13375647 in words is "thirteen million, three hundred seventy-five thousand, six hundred forty-seven".