80719 has 4 divisors (see below), whose sum is σ = 82296. Its totient is φ = 79144.

The previous prime is 80713. The next prime is 80737. The reversal of 80719 is 91708.

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

It is a cyclic number.

It is not a de Polignac number, because 80719 - 2⁵ = 80687 is a prime.

It is a super-2 number, since 2×80719² = 13031113922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80693 and 80702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709 + ... + 814.

It is an arithmetic number, because the mean of its divisors is an integer number (20574).

2⁸⁰⁷¹⁹ is an apocalyptic number.

80719 is a deficient number, since it is larger than the sum of its proper divisors (1577).

80719 is a wasteful number, since it uses less digits than its factorization.

80719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 80719 is about 284.1108938425. The cubic root of 80719 is about 43.2173955435.

The spelling of 80719 in words is "eighty thousand, seven hundred nineteen".