16680093 has 4 divisors (see below), whose sum is σ = 22240128. Its totient is φ = 11120060.

The previous prime is 16680091. The next prime is 16680137. The reversal of 16680093 is 39008661.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39008661 = 3 ⋅13002887.

It is a cyclic number.

It is not a de Polignac number, because 16680093 - 2¹ = 16680091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16680091) 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, 2780013 + ... + 2780018.

It is an arithmetic number, because the mean of its divisors is an integer number (5560032).

Almost surely, 2^16680093 is an apocalyptic number.

It is an amenable number.

16680093 is a deficient number, since it is larger than the sum of its proper divisors (5560035).

16680093 is an equidigital number, since it uses as much as digits as its factorization.

16680093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560034.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 16680093 is about 4084.1269568905. The cubic root of 16680093 is about 255.5050505599.

The spelling of 16680093 in words is "sixteen million, six hundred eighty thousand, ninety-three".