13560981 has 32 divisors (see below), whose sum is σ = 21946368. Its totient is φ = 7283520.

The previous prime is 13560959. The next prime is 13560983. The reversal of 13560981 is 18906531.

It is not a de Polignac number, because 13560981 - 2⁵ = 13560949 is a prime.

It is a super-2 number, since 2×13560981² = 367800411364722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13560983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23806 + ... + 24368.

It is an arithmetic number, because the mean of its divisors is an integer number (685824).

Almost surely, 2^13560981 is an apocalyptic number.

It is an amenable number.

13560981 is a deficient number, since it is larger than the sum of its proper divisors (8385387).

13560981 is a wasteful number, since it uses less digits than its factorization.

13560981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13560981 is about 3682.5237270111. The cubic root of 13560981 is about 238.4681426624.

It can be divided in two parts, 13560 and 981, that added together give a palindrome (14541).

The spelling of 13560981 in words is "thirteen million, five hundred sixty thousand, nine hundred eighty-one".