13775564 has 12 divisors (see below), whose sum is σ = 26298888. Its totient is φ = 6261600.

The previous prime is 13775539. The next prime is 13775599. The reversal of 13775564 is 46557731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156497 + ... + 156584.

It is an arithmetic number, because the mean of its divisors is an integer number (2191574).

Almost surely, 2^13775564 is an apocalyptic number.

It is an amenable number.

13775564 is a deficient number, since it is larger than the sum of its proper divisors (12523324).

13775564 is a wasteful number, since it uses less digits than its factorization.

13775564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313096 (or 313094 counting only the distinct ones).

The product of its digits is 88200, while the sum is 38.

The square root of 13775564 is about 3711.5446919039. The cubic root of 13775564 is about 239.7193710661.

It can be divided in two parts, 13 and 775564, that added together give a palindrome (775577).

The spelling of 13775564 in words is "thirteen million, seven hundred seventy-five thousand, five hundred sixty-four".