16708993 has 4 divisors (see below), whose sum is σ = 19096000. Its totient is φ = 14321988.

The previous prime is 16708987. The next prime is 16709023. The reversal of 16708993 is 39980761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16708993 - 2²¹ = 14611841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16708903) 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, 1193493 + ... + 1193506.

It is an arithmetic number, because the mean of its divisors is an integer number (4774000).

Almost surely, 2^16708993 is an apocalyptic number.

It is an amenable number.

16708993 is a deficient number, since it is larger than the sum of its proper divisors (2387007).

16708993 is an equidigital number, since it uses as much as digits as its factorization.

16708993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387006.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 16708993 is about 4087.6635135490. The cubic root of 16708993 is about 255.6525284645.

The spelling of 16708993 in words is "sixteen million, seven hundred eight thousand, nine hundred ninety-three".