80879647 has 8 divisors (see below), whose sum is σ = 82288640. Its totient is φ = 79480440.

The previous prime is 80879641. The next prime is 80879657. The reversal of 80879647 is 74697808.

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 80879647 - 2³ = 80879639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80879647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80879641) 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 7 ways as a sum of consecutive naturals, for example, 15322 + ... + 19912.

It is an arithmetic number, because the mean of its divisors is an integer number (10286080).

Almost surely, 2^80879647 is an apocalyptic number.

80879647 is a deficient number, since it is larger than the sum of its proper divisors (1408993).

80879647 is a wasteful number, since it uses less digits than its factorization.

80879647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 80879647 is about 8993.3112366914. The cubic root of 80879647 is about 432.4604697295.

The spelling of 80879647 in words is "eighty million, eight hundred seventy-nine thousand, six hundred forty-seven".