80791719 has 8 divisors (see below), whose sum is σ = 107797872. Its totient is φ = 53823360.

The previous prime is 80791699. The next prime is 80791721. The reversal of 80791719 is 91719708.

It is a happy number.

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

It is not a de Polignac number, because 80791719 - 2⁵ = 80791687 is a prime.

It is a super-2 number, since 2×80791719² = 13054603717949922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80791219) 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, 4012 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (13474734).

Almost surely, 2^80791719 is an apocalyptic number.

80791719 is a deficient number, since it is larger than the sum of its proper divisors (27006153).

80791719 is a wasteful number, since it uses less digits than its factorization.

80791719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18897.

The product of its (nonzero) digits is 31752, while the sum is 42.

The square root of 80791719 is about 8988.4213853157. The cubic root of 80791719 is about 432.3036969870.

The spelling of 80791719 in words is "eighty million, seven hundred ninety-one thousand, seven hundred nineteen".