16623337 has 2 divisors, whose sum is σ = 16623338. Its totient is φ = 16623336.

The previous prime is 16623311. The next prime is 16623353. The reversal of 16623337 is 73332661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8620096 + 8003241 = 2936^2 + 2829^2 .

It is a cyclic number.

It is not a de Polignac number, because 16623337 - 2⁷ = 16623209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16623299 and 16623308.

It is not a weakly prime, because it can be changed into another prime (16623367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8311668 + 8311669.

It is an arithmetic number, because the mean of its divisors is an integer number (8311669).

Almost surely, 2^16623337 is an apocalyptic number.

It is an amenable number.

16623337 is a deficient number, since it is larger than the sum of its proper divisors (1).

16623337 is an equidigital number, since it uses as much as digits as its factorization.

16623337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 31.

The square root of 16623337 is about 4077.1726723307. The cubic root of 16623337 is about 255.2149258098.

Adding to 16623337 its reverse (73332661), we get a palindrome (89955998).

The spelling of 16623337 in words is "sixteen million, six hundred twenty-three thousand, three hundred thirty-seven".