13600561 has 32 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 10782720.

The previous prime is 13600553. The next prime is 13600583. The reversal of 13600561 is 16500631.

It is not a de Polignac number, because 13600561 - 2³ = 13600553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13600541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172120 + ... + 172198.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^13600561 is an apocalyptic number.

It is an amenable number.

13600561 is a deficient number, since it is larger than the sum of its proper divisors (3333839).

13600561 is a wasteful number, since it uses less digits than its factorization.

13600561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13600561 is about 3687.8938433746. The cubic root of 13600561 is about 238.6999204191.

It can be divided in two parts, 13600 and 561, that added together give a square (14161 = 119²).

The spelling of 13600561 in words is "thirteen million, six hundred thousand, five hundred sixty-one".