16995613 has 2 divisors, whose sum is σ = 16995614. Its totient is φ = 16995612.

The previous prime is 16995611. The next prime is 16995619. The reversal of 16995613 is 31659961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 128164 = 4107^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 16995613 - 2¹ = 16995611 is a prime.

It is a super-2 number, since 2×16995613² = 577701722491538, which contains 22 as substring.

Together with 16995611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16995611) 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 as a sum of consecutive naturals, namely, 8497806 + 8497807.

It is an arithmetic number, because the mean of its divisors is an integer number (8497807).

Almost surely, 2^16995613 is an apocalyptic number.

It is an amenable number.

16995613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16995613 is an equidigital number, since it uses as much as digits as its factorization.

16995613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 16995613 is about 4122.5735893978. The cubic root of 16995613 is about 257.1060390996.

The spelling of 16995613 in words is "sixteen million, nine hundred ninety-five thousand, six hundred thirteen".