16623097 has 4 divisors (see below), whose sum is σ = 16636516. Its totient is φ = 16609680.

The previous prime is 16623077. The next prime is 16623109. The reversal of 16623097 is 79032661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79032661 = 107 ⋅738623.

It can be written as a sum of positive squares in 2 ways, for example, as 2702736 + 13920361 = 1644^2 + 3731^2 .

It is a cyclic number.

It is not a de Polignac number, because 16623097 - 2¹⁹ = 16098809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16623077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4638 + ... + 7399.

It is an arithmetic number, because the mean of its divisors is an integer number (4159129).

Almost surely, 2^16623097 is an apocalyptic number.

It is an amenable number.

16623097 is a deficient number, since it is larger than the sum of its proper divisors (13419).

16623097 is a wasteful number, since it uses less digits than its factorization.

16623097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16623097 is about 4077.1432400641. The cubic root of 16623097 is about 255.2136975791.

The spelling of 16623097 in words is "sixteen million, six hundred twenty-three thousand, ninety-seven".