84318681 has 8 divisors (see below), whose sum is σ = 112873824. Its totient is φ = 55988000.

The previous prime is 84318659. The next prime is 84318697. The reversal of 84318681 is 18681348.

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 84318681 - 2⁵ = 84318649 is a prime.

It is a super-2 number, since 2×84318681² = 14219279931159522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84318781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55236 + ... + 56741.

It is an arithmetic number, because the mean of its divisors is an integer number (14109228).

Almost surely, 2^84318681 is an apocalyptic number.

It is an amenable number.

84318681 is a deficient number, since it is larger than the sum of its proper divisors (28555143).

84318681 is a wasteful number, since it uses less digits than its factorization.

84318681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112231.

The product of its digits is 36864, while the sum is 39.

The square root of 84318681 is about 9182.5204056403. The cubic root of 84318681 is about 438.5050521935.

The spelling of 84318681 in words is "eighty-four million, three hundred eighteen thousand, six hundred eighty-one".