13656555 has 48 divisors (see below), whose sum is σ = 26417664. Its totient is φ = 6469440.

The previous prime is 13656551. The next prime is 13656557. The reversal of 13656555 is 55565631.

13656555 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13656555 - 2² = 13656551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13656551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22972 + ... + 23558.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^13656555 is an apocalyptic number.

13656555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13656555 is a deficient number, since it is larger than the sum of its proper divisors (12761109).

13656555 is a wasteful number, since it uses less digits than its factorization.

13656555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 653 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 13656555 is about 3695.4776416588. The cubic root of 13656555 is about 239.0270506196.

The spelling of 13656555 in words is "thirteen million, six hundred fifty-six thousand, five hundred fifty-five".