80715619 has 4 divisors (see below), whose sum is σ = 80733744. Its totient is φ = 80697496.

The previous prime is 80715617. The next prime is 80715623. The reversal of 80715619 is 91651708.

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 80715619 - 2¹ = 80715617 is a prime.

It is a super-2 number, since 2×80715619² = 13030022301106322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80715617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754 + ... + 13000.

It is an arithmetic number, because the mean of its divisors is an integer number (20183436).

Almost surely, 2^80715619 is an apocalyptic number.

80715619 is a deficient number, since it is larger than the sum of its proper divisors (18125).

80715619 is a wasteful number, since it uses less digits than its factorization.

80715619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18124.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 80715619 is about 8984.1871641234. The cubic root of 80715619 is about 432.1679213306.

The spelling of 80715619 in words is "eighty million, seven hundred fifteen thousand, six hundred nineteen".