80871085 has 8 divisors (see below), whose sum is σ = 99668376. Its totient is φ = 62948160.

The previous prime is 80871083. The next prime is 80871097. The reversal of 80871085 is 58017808.

It can be written as a sum of positive squares in 4 ways, for example, as 38217124 + 42653961 = 6182^2 + 6531^2 .

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

It is not a de Polignac number, because 80871085 - 2¹ = 80871083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80871083) 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 7 ways as a sum of consecutive naturals, for example, 218386 + ... + 218755.

It is an arithmetic number, because the mean of its divisors is an integer number (12458547).

Almost surely, 2^80871085 is an apocalyptic number.

It is an amenable number.

80871085 is a deficient number, since it is larger than the sum of its proper divisors (18797291).

80871085 is a wasteful number, since it uses less digits than its factorization.

80871085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437183.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 80871085 is about 8992.8352036496. The cubic root of 80871085 is about 432.4452089590.

The spelling of 80871085 in words is "eighty million, eight hundred seventy-one thousand, eighty-five".