16623371 has 4 divisors (see below), whose sum is σ = 16649712. Its totient is φ = 16597032.

The previous prime is 16623367. The next prime is 16623377. The reversal of 16623371 is 17332661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17332661 = 89 ⋅194749.

It is a cyclic number.

It is not a de Polignac number, because 16623371 - 2² = 16623367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16623377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12200 + ... + 13493.

It is an arithmetic number, because the mean of its divisors is an integer number (4162428).

Almost surely, 2^16623371 is an apocalyptic number.

16623371 is a deficient number, since it is larger than the sum of its proper divisors (26341).

16623371 is an equidigital number, since it uses as much as digits as its factorization.

16623371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26340.

The product of its digits is 4536, while the sum is 29.

The square root of 16623371 is about 4077.1768418846. The cubic root of 16623371 is about 255.2150998082.

The spelling of 16623371 in words is "sixteen million, six hundred twenty-three thousand, three hundred seventy-one".