16697923 has 4 divisors (see below), whose sum is σ = 18215928. Its totient is φ = 15179920.

The previous prime is 16697911. The next prime is 16697929. The reversal of 16697923 is 32979661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16697923 - 2¹³ = 16689731 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16697923.

It is not an unprimeable number, because it can be changed into a prime (16697929) 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, 758986 + ... + 759007.

It is an arithmetic number, because the mean of its divisors is an integer number (4553982).

Almost surely, 2^16697923 is an apocalyptic number.

16697923 is a deficient number, since it is larger than the sum of its proper divisors (1518005).

16697923 is a wasteful number, since it uses less digits than its factorization.

16697923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518004.

The product of its digits is 122472, while the sum is 43.

The square root of 16697923 is about 4086.3092149273. The cubic root of 16697923 is about 255.5960579018.

It can be divided in two parts, 166 and 97923, that added together give a palindrome (98089).

The spelling of 16697923 in words is "sixteen million, six hundred ninety-seven thousand, nine hundred twenty-three".