84686871 has 8 divisors (see below), whose sum is σ = 113284864. Its totient is φ = 56273400.

The previous prime is 84686863. The next prime is 84686881. The reversal of 84686871 is 17868648.

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

It is not a de Polignac number, because 84686871 - 2³ = 84686863 is a prime.

It is a super-2 number, since 2×84686871² = 14343732239541282, which contains 22 as substring.

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 84686871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84686831) 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, 45055 + ... + 46896.

It is an arithmetic number, because the mean of its divisors is an integer number (14160608).

Almost surely, 2^84686871 is an apocalyptic number.

84686871 is a deficient number, since it is larger than the sum of its proper divisors (28597993).

84686871 is a wasteful number, since it uses less digits than its factorization.

84686871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92261.

The product of its digits is 516096, while the sum is 48.

The square root of 84686871 is about 9202.5469843951. The cubic root of 84686871 is about 439.1423911503.

The spelling of 84686871 in words is "eighty-four million, six hundred eighty-six thousand, eight hundred seventy-one".