13655697 has 12 divisors (see below), whose sum is σ = 20013840. Its totient is φ = 8275960.

The previous prime is 13655689. The next prime is 13655713. The reversal of 13655697 is 79655631.

It is a happy number.

It is not a de Polignac number, because 13655697 - 2³ = 13655689 is a prime.

It is a super-3 number, since 3×13655697³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13655647) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18447 + ... + 19172.

It is an arithmetic number, because the mean of its divisors is an integer number (1667820).

Almost surely, 2^13655697 is an apocalyptic number.

It is an amenable number.

13655697 is a deficient number, since it is larger than the sum of its proper divisors (6358143).

13655697 is a wasteful number, since it uses less digits than its factorization.

13655697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37644 (or 37633 counting only the distinct ones).

The product of its digits is 170100, while the sum is 42.

The square root of 13655697 is about 3695.3615520000. The cubic root of 13655697 is about 239.0220447328.

The spelling of 13655697 in words is "thirteen million, six hundred fifty-five thousand, six hundred ninety-seven".