16613323 has 6 divisors (see below), whose sum is σ = 17030132. Its totient is φ = 16206480.

The previous prime is 16613281. The next prime is 16613347. The reversal of 16613323 is 32331661.

It is not a de Polignac number, because 16613323 - 2¹⁷ = 16482251 is a prime.

It is a super-2 number, since 2×16613323² = 552005002204658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16113323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3261 + ... + 6622.

Almost surely, 2^16613323 is an apocalyptic number.

16613323 is a deficient number, since it is larger than the sum of its proper divisors (416809).

16613323 is an frugal number, since it uses more digits than its factorization.

16613323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9965 (or 9924 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 16613323 is about 4075.9444304357. The cubic root of 16613323 is about 255.1636678377.

Adding to 16613323 its reverse (32331661), we get a palindrome (48944984).

It can be divided in two parts, 1661 and 3323, that multiplied together give a triangular number (5519503 = T₃₃₂₂).

The spelling of 16613323 in words is "sixteen million, six hundred thirteen thousand, three hundred twenty-three".