16885613 has 2 divisors, whose sum is σ = 16885614. Its totient is φ = 16885612.

The previous prime is 16885567. The next prime is 16885621. The reversal of 16885613 is 31658861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10843849 + 6041764 = 3293^2 + 2458^2 .

It is a cyclic number.

It is not a de Polignac number, because 16885613 - 2¹⁰ = 16884589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16885513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8442806 + 8442807.

It is an arithmetic number, because the mean of its divisors is an integer number (8442807).

Almost surely, 2^16885613 is an apocalyptic number.

It is an amenable number.

16885613 is a deficient number, since it is larger than the sum of its proper divisors (1).

16885613 is an equidigital number, since it uses as much as digits as its factorization.

16885613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 16885613 is about 4109.2107514704. The cubic root of 16885613 is about 256.5501525097.

The spelling of 16885613 in words is "sixteen million, eight hundred eighty-five thousand, six hundred thirteen".