13661016 has 16 divisors (see below), whose sum is σ = 34152600. Its totient is φ = 4553664.

The previous prime is 13661003. The next prime is 13661017. The reversal of 13661016 is 61016631.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 569209 = 13661016 / (1 + 3 + 6 + 6 + 1 + 0 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13661017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284581 + ... + 284628.

Almost surely, 2^13661016 is an apocalyptic number.

It is an amenable number.

13661016 is an abundant number, since it is smaller than the sum of its proper divisors (20491584).

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

13661016 is a wasteful number, since it uses less digits than its factorization.

13661016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569218 (or 569214 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 13661016 is about 3696.0811679399. The cubic root of 13661016 is about 239.0530743518.

Adding to 13661016 its reverse (61016631), we get a palindrome (74677647).

The spelling of 13661016 in words is "thirteen million, six hundred sixty-one thousand, sixteen".