16805013 has 8 divisors (see below), whose sum is σ = 22427328. Its totient is φ = 11193024.

The previous prime is 16805011. The next prime is 16805023. The reversal of 16805013 is 31050861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16805013 - 2¹ = 16805011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2856 + ... + 6462.

It is an arithmetic number, because the mean of its divisors is an integer number (2803416).

Almost surely, 2^16805013 is an apocalyptic number.

It is an amenable number.

16805013 is a deficient number, since it is larger than the sum of its proper divisors (5622315).

16805013 is a wasteful number, since it uses less digits than its factorization.

16805013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 16805013 is about 4099.3917841553. The cubic root of 16805013 is about 256.1413048425.

Adding to 16805013 its reverse (31050861), we get a palindrome (47855874).

The spelling of 16805013 in words is "sixteen million, eight hundred five thousand, thirteen".