13016661 has 8 divisors (see below), whose sum is σ = 19834944. Its totient is φ = 7438080.

The previous prime is 13016623. The next prime is 13016677. The reversal of 13016661 is 16661031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13016661 - 2⁹ = 13016149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13016681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309900 + ... + 309941.

It is an arithmetic number, because the mean of its divisors is an integer number (2479368).

Almost surely, 2^13016661 is an apocalyptic number.

It is an amenable number.

13016661 is a deficient number, since it is larger than the sum of its proper divisors (6818283).

13016661 is an equidigital number, since it uses as much as digits as its factorization.

13016661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619851.

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

The square root of 13016661 is about 3607.8610006484. The cubic root of 13016661 is about 235.2338761134.

Adding to 13016661 its reverse (16661031), we get a palindrome (29677692).

The spelling of 13016661 in words is "thirteen million, sixteen thousand, six hundred sixty-one".