80587679 has 4 divisors (see below), whose sum is σ = 80606976. Its totient is φ = 80568384.

The previous prime is 80587609. The next prime is 80587681. The reversal of 80587679 is 97678508.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80587679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80587609) 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, 479 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (20151744).

Almost surely, 2^80587679 is an apocalyptic number.

80587679 is a deficient number, since it is larger than the sum of its proper divisors (19297).

80587679 is a wasteful number, since it uses less digits than its factorization.

80587679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19296.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 80587679 is about 8977.0640523503. The cubic root of 80587679 is about 431.9394616100.

The spelling of 80587679 in words is "eighty million, five hundred eighty-seven thousand, six hundred seventy-nine".