13722867 has 6 divisors (see below), whose sum is σ = 19821932. Its totient is φ = 9148572.

The previous prime is 13722851. The next prime is 13722889. The reversal of 13722867 is 76822731.

13722867 is a `hidden beast` number, since 1 + 372 + 286 + 7 = 666.

13722867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13722867 - 2⁴ = 13722851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13722817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 762373 + ... + 762390.

Almost surely, 2^13722867 is an apocalyptic number.

13722867 is a deficient number, since it is larger than the sum of its proper divisors (6099065).

13722867 is a wasteful number, since it uses less digits than its factorization.

13722867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524769 (or 1524766 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 13722867 is about 3704.4388238976. The cubic root of 13722867 is about 239.4133065470.

The spelling of 13722867 in words is "thirteen million, seven hundred twenty-two thousand, eight hundred sixty-seven".