13616081 has 2 divisors, whose sum is σ = 13616082. Its totient is φ = 13616080.

The previous prime is 13616047. The next prime is 13616107. The reversal of 13616081 is 18061631.

It is an a-pointer prime, because the next prime (13616107) can be obtained adding 13616081 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 3478225 = 3184^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 13616081 - 2⁶ = 13616017 is a prime.

It is a super-2 number, since 2×13616081² = 370795323597122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13616081.

It is not a weakly prime, because it can be changed into another prime (13613081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6808040 + 6808041.

It is an arithmetic number, because the mean of its divisors is an integer number (6808041).

Almost surely, 2^13616081 is an apocalyptic number.

It is an amenable number.

13616081 is a deficient number, since it is larger than the sum of its proper divisors (1).

13616081 is an equidigital number, since it uses as much as digits as its factorization.

13616081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13616081 is about 3689.9974254734. The cubic root of 13616081 is about 238.7906817366.

The spelling of 13616081 in words is "thirteen million, six hundred sixteen thousand, eighty-one".