13656245 has 16 divisors (see below), whose sum is σ = 17282160. Its totient is φ = 10343424.

The previous prime is 13656217. The next prime is 13656259. The reversal of 13656245 is 54265631.

It can be written as a sum of positive squares in 8 ways, for example, as 47524 + 13608721 = 218^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 13656245 - 2⁸ = 13655989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6797 + ... + 8573.

It is an arithmetic number, because the mean of its divisors is an integer number (1080135).

Almost surely, 2^13656245 is an apocalyptic number.

It is an amenable number.

13656245 is a deficient number, since it is larger than the sum of its proper divisors (3625915).

13656245 is a wasteful number, since it uses less digits than its factorization.

13656245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864.

The product of its digits is 21600, while the sum is 32.

The square root of 13656245 is about 3695.4356982635. The cubic root of 13656245 is about 239.0252419901.

The spelling of 13656245 in words is "thirteen million, six hundred fifty-six thousand, two hundred forty-five".