16680719 has 8 divisors (see below), whose sum is σ = 18447312. Its totient is φ = 14955840.

The previous prime is 16680701. The next prime is 16680731. The reversal of 16680719 is 91708661.

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 16680719 - 2⁸ = 16680463 is a prime.

It is a super-2 number, since 2×16680719² = 556492772713922, 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 (16680739) 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, 9584 + ... + 11189.

It is an arithmetic number, because the mean of its divisors is an integer number (2305914).

Almost surely, 2^16680719 is an apocalyptic number.

16680719 is a deficient number, since it is larger than the sum of its proper divisors (1766593).

16680719 is a wasteful number, since it uses less digits than its factorization.

16680719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20857.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 16680719 is about 4084.2035943376. The cubic root of 16680719 is about 255.5082468683.

The spelling of 16680719 in words is "sixteen million, six hundred eighty thousand, seven hundred nineteen".