13616091 has 12 divisors (see below), whose sum is σ = 19699680. Its totient is φ = 9062640.

The previous prime is 13616081. The next prime is 13616107. The reversal of 13616091 is 19061631.

It is not a de Polignac number, because 13616091 - 2⁹ = 13615579 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13616081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10446 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (1641640).

Almost surely, 2^13616091 is an apocalyptic number.

13616091 is a deficient number, since it is larger than the sum of its proper divisors (6083589).

13616091 is a wasteful number, since it uses less digits than its factorization.

13616091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 13616091 is about 3689.9987804876. The cubic root of 13616091 is about 238.7907401946.

The spelling of 13616091 in words is "thirteen million, six hundred sixteen thousand, ninety-one".