16609613 has 2 divisors, whose sum is σ = 16609614. Its totient is φ = 16609612.

The previous prime is 16609603. The next prime is 16609643. The reversal of 16609613 is 31690661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 3374569 = 3638^2 + 1837^2 .

It is a cyclic number.

It is not a de Polignac number, because 16609613 - 2¹⁰ = 16608589 is a prime.

It is equal to p_1067774 and since 16609613 and 1067774 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16609613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16609603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8304806 + 8304807.

It is an arithmetic number, because the mean of its divisors is an integer number (8304807).

Almost surely, 2^16609613 is an apocalyptic number.

It is an amenable number.

16609613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16609613 is an equidigital number, since it uses as much as digits as its factorization.

16609613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 16609613 is about 4075.4892957779. The cubic root of 16609613 is about 255.1446724871.

The spelling of 16609613 in words is "sixteen million, six hundred nine thousand, six hundred thirteen".