13656806 has 4 divisors (see below), whose sum is σ = 20485212. Its totient is φ = 6828402.

The previous prime is 13656791. The next prime is 13656821. The reversal of 13656806 is 60865631.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13656791) and next prime (13656821).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3414200 + ... + 3414203.

It is an arithmetic number, because the mean of its divisors is an integer number (5121303).

Almost surely, 2^13656806 is an apocalyptic number.

13656806 is a deficient number, since it is larger than the sum of its proper divisors (6828406).

13656806 is an equidigital number, since it uses as much as digits as its factorization.

13656806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828405.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 13656806 is about 3695.5116019301. The cubic root of 13656806 is about 239.0285150060.

The spelling of 13656806 in words is "thirteen million, six hundred fifty-six thousand, eight hundred six".