13656069 has 36 divisors (see below), whose sum is σ = 23397088. Its totient is φ = 7514640.

The previous prime is 13656031. The next prime is 13656077. The reversal of 13656069 is 96065631.

13656069 is a `hidden beast` number, since 1 + 36 + 560 + 69 = 666.

13656069 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 13656069 - 2¹² = 13651973 is a prime.

It is a super-2 number, since 2×13656069² = 372976441065522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 192304 + ... + 192374.

Almost surely, 2^13656069 is an apocalyptic number.

It is an amenable number.

13656069 is a deficient number, since it is larger than the sum of its proper divisors (9741019).

13656069 is an equidigital number, since it uses as much as digits as its factorization.

13656069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 13656069 is about 3695.4118850272. The cubic root of 13656069 is about 239.0242151430.

The spelling of 13656069 in words is "thirteen million, six hundred fifty-six thousand, sixty-nine".