13561086 has 64 divisors (see below), whose sum is σ = 34214400. Its totient is φ = 3480960.

The previous prime is 13561081. The next prime is 13561103. The reversal of 13561086 is 68016531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13561081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68740 + ... + 68936.

It is an arithmetic number, because the mean of its divisors is an integer number (534600).

Almost surely, 2^13561086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13561086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17107200).

13561086 is an abundant number, since it is smaller than the sum of its proper divisors (20653314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13561086 is a wasteful number, since it uses less digits than its factorization.

13561086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13561086 is about 3682.5379835108. The cubic root of 13561086 is about 238.4687581314.

Subtracting 13561086 from its reverse (68016531), we obtain a palindrome (54455445).

It can be divided in two parts, 1356 and 1086, that added together give a palindrome (2442).

The spelling of 13561086 in words is "thirteen million, five hundred sixty-one thousand, eighty-six".