84671881 has 8 divisors (see below), whose sum is σ = 99889664. Its totient is φ = 70234560.

The previous prime is 84671861. The next prime is 84671887. The reversal of 84671881 is 18817648.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84671881 is a prime.

It is a super-2 number, since 2×84671881² = 14338654864156322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84671887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194880 + ... + 195313.

It is an arithmetic number, because the mean of its divisors is an integer number (12486208).

Almost surely, 2^84671881 is an apocalyptic number.

It is an amenable number.

84671881 is a deficient number, since it is larger than the sum of its proper divisors (15217783).

84671881 is a wasteful number, since it uses less digits than its factorization.

84671881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390231.

The product of its digits is 86016, while the sum is 43.

The square root of 84671881 is about 9201.7324999154. The cubic root of 84671881 is about 439.1164794877.

It can be divided in two parts, 846 and 71881, that added together give a palindrome (72727).

The spelling of 84671881 in words is "eighty-four million, six hundred seventy-one thousand, eight hundred eighty-one".