13656443 has 2 divisors, whose sum is σ = 13656444. Its totient is φ = 13656442.

The previous prime is 13656439. The next prime is 13656449. The reversal of 13656443 is 34465631.

13656443 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13656443 - 2² = 13656439 is a prime.

It is not a weakly prime, because it can be changed into another prime (13656449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6828221 + 6828222.

It is an arithmetic number, because the mean of its divisors is an integer number (6828222).

Almost surely, 2^13656443 is an apocalyptic number.

13656443 is a deficient number, since it is larger than the sum of its proper divisors (1).

13656443 is an equidigital number, since it uses as much as digits as its factorization.

13656443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 13656443 is about 3695.4624879709. The cubic root of 13656443 is about 239.0263971824.

The spelling of 13656443 in words is "thirteen million, six hundred fifty-six thousand, four hundred forty-three".