13656845 has 8 divisors (see below), whose sum is σ = 16508664. Its totient is φ = 10845184.

The previous prime is 13656827. The next prime is 13656847. The reversal of 13656845 is 54865631.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 13169641 = 698^2 + 3629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13656845 - 2⁶ = 13656781 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13656799 and 13656808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9284 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (2063583).

Almost surely, 2^13656845 is an apocalyptic number.

It is an amenable number.

13656845 is a deficient number, since it is larger than the sum of its proper divisors (2851819).

13656845 is a wasteful number, since it uses less digits than its factorization.

13656845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20079.

The product of its digits is 86400, while the sum is 38.

The square root of 13656845 is about 3695.5168785976. The cubic root of 13656845 is about 239.0287425386.

The spelling of 13656845 in words is "thirteen million, six hundred fifty-six thousand, eight hundred forty-five".