16720883 has 4 divisors (see below), whose sum is σ = 16750440. Its totient is φ = 16691328.

The previous prime is 16720871. The next prime is 16720897. The reversal of 16720883 is 38802761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38802761 = 2531 ⋅15331.

It is a cyclic number.

It is not a de Polignac number, because 16720883 - 2⁶ = 16720819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16720813) 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, 13913 + ... + 15066.

It is an arithmetic number, because the mean of its divisors is an integer number (4187610).

Almost surely, 2^16720883 is an apocalyptic number.

16720883 is a deficient number, since it is larger than the sum of its proper divisors (29557).

16720883 is an equidigital number, since it uses as much as digits as its factorization.

16720883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29556.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 16720883 is about 4089.1176309810. The cubic root of 16720883 is about 255.7131542572.

The spelling of 16720883 in words is "sixteen million, seven hundred twenty thousand, eight hundred eighty-three".