16713881 has 4 divisors (see below), whose sum is σ = 16724532. Its totient is φ = 16703232.

The previous prime is 16713877. The next prime is 16713883. The reversal of 16713881 is 18831761.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 5929225 = 3284^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 16713881 - 2² = 16713877 is a prime.

It is a super-2 number, since 2×16713881² = 558707636164322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16713883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456 + ... + 6281.

It is an arithmetic number, because the mean of its divisors is an integer number (4181133).

Almost surely, 2^16713881 is an apocalyptic number.

It is an amenable number.

16713881 is a deficient number, since it is larger than the sum of its proper divisors (10651).

16713881 is an equidigital number, since it uses as much as digits as its factorization.

16713881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650.

The product of its digits is 8064, while the sum is 35.

The square root of 16713881 is about 4088.2613664001. The cubic root of 16713881 is about 255.6774553152.

The spelling of 16713881 in words is "sixteen million, seven hundred thirteen thousand, eight hundred eighty-one".