16870719 has 4 divisors (see below), whose sum is σ = 22494296. Its totient is φ = 11247144.

The previous prime is 16870717. The next prime is 16870741. The reversal of 16870719 is 91707861.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16870719 - 2¹ = 16870717 is a prime.

It is a super-2 number, since 2×16870719² = 569242319153922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16870717) 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, 2811784 + ... + 2811789.

It is an arithmetic number, because the mean of its divisors is an integer number (5623574).

Almost surely, 2^16870719 is an apocalyptic number.

16870719 is a deficient number, since it is larger than the sum of its proper divisors (5623577).

16870719 is an equidigital number, since it uses as much as digits as its factorization.

16870719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623576.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 16870719 is about 4107.3980815110. The cubic root of 16870719 is about 256.4747000722.

The spelling of 16870719 in words is "sixteen million, eight hundred seventy thousand, seven hundred nineteen".