13655775 has 72 divisors (see below), whose sum is σ = 27914880. Its totient is φ = 5754240.

The previous prime is 13655773. The next prime is 13655791. The reversal of 13655775 is 57755631.

It is a happy number.

13655775 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 13655775 - 2¹ = 13655773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13655771) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 369057 + ... + 369093.

Almost surely, 2^13655775 is an apocalyptic number.

13655775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13655775 is an abundant number, since it is smaller than the sum of its proper divisors (14259105).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13655775 is a wasteful number, since it uses less digits than its factorization.

13655775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 71 counting only the distinct ones).

The product of its digits is 110250, while the sum is 39.

The square root of 13655775 is about 3695.3721057561. The cubic root of 13655775 is about 239.0224998221.

It can be divided in two parts, 1365 and 5775, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 13655775 in words is "thirteen million, six hundred fifty-five thousand, seven hundred seventy-five".