80980871 has 4 divisors (see below), whose sum is σ = 82090272. Its totient is φ = 79871472.

The previous prime is 80980849. The next prime is 80980909. The reversal of 80980871 is 17808908.

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 80980871 - 2⁶ = 80980807 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 (80980841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554591 + ... + 554736.

It is an arithmetic number, because the mean of its divisors is an integer number (20522568).

Almost surely, 2^80980871 is an apocalyptic number.

80980871 is a deficient number, since it is larger than the sum of its proper divisors (1109401).

80980871 is a wasteful number, since it uses less digits than its factorization.

80980871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109400.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 80980871 is about 8998.9372150271. The cubic root of 80980871 is about 432.6408081736.

The spelling of 80980871 in words is "eighty million, nine hundred eighty thousand, eight hundred seventy-one".