13897775 has 12 divisors (see below), whose sum is σ = 17280144. Its totient is φ = 11088000.

The previous prime is 13897717. The next prime is 13897777. The reversal of 13897775 is 57779831.

13897775 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 13897775 - 2⁶ = 13897711 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 (13897777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15335 + ... + 16215.

It is an arithmetic number, because the mean of its divisors is an integer number (1440012).

Almost surely, 2^13897775 is an apocalyptic number.

13897775 is a deficient number, since it is larger than the sum of its proper divisors (3382369).

13897775 is an equidigital number, since it uses as much as digits as its factorization.

13897775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1517 counting only the distinct ones).

The product of its digits is 370440, while the sum is 47.

The square root of 13897775 is about 3727.9719687787. The cubic root of 13897775 is about 240.4261814153.

The spelling of 13897775 in words is "thirteen million, eight hundred ninety-seven thousand, seven hundred seventy-five".