13857073 has 2 divisors, whose sum is σ = 13857074. Its totient is φ = 13857072.

The previous prime is 13857071. The next prime is 13857083. The reversal of 13857073 is 37075831.

13857073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9290304 + 4566769 = 3048^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 13857073 - 2¹ = 13857071 is a prime.

Together with 13857071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13857071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6928536 + 6928537.

It is an arithmetic number, because the mean of its divisors is an integer number (6928537).

Almost surely, 2^13857073 is an apocalyptic number.

It is an amenable number.

13857073 is a deficient number, since it is larger than the sum of its proper divisors (1).

13857073 is an equidigital number, since it uses as much as digits as its factorization.

13857073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 13857073 is about 3722.5089657380. The cubic root of 13857073 is about 240.1912422455.

The spelling of 13857073 in words is "thirteen million, eight hundred fifty-seven thousand, seventy-three".