16805739 has 8 divisors (see below), whose sum is σ = 22537872. Its totient is φ = 11138720.

The previous prime is 16805731. The next prime is 16805759. The reversal of 16805739 is 93750861.

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

It is a cyclic number.

It is not a de Polignac number, because 16805739 - 2³ = 16805731 is a prime.

It is a super-2 number, since 2×16805739² = 564865726672242, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 16805697 and 16805706.

It is not an unprimeable number, because it can be changed into a prime (16805731) 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, 15672 + ... + 16709.

It is an arithmetic number, because the mean of its divisors is an integer number (2817234).

Almost surely, 2^16805739 is an apocalyptic number.

16805739 is a deficient number, since it is larger than the sum of its proper divisors (5732133).

16805739 is a wasteful number, since it uses less digits than its factorization.

16805739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32557.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 16805739 is about 4099.4803329203. The cubic root of 16805739 is about 256.1449933433.

The spelling of 16805739 in words is "sixteen million, eight hundred five thousand, seven hundred thirty-nine".