84168681 has 8 divisors (see below), whose sum is σ = 114612864. Its totient is φ = 54918480.

The previous prime is 84168677. The next prime is 84168691. The reversal of 84168681 is 18686148.

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

It is not a de Polignac number, because 84168681 - 2² = 84168677 is a prime.

It is a super-2 number, since 2×84168681² = 14168733722559522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84168691) 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, 298330 + ... + 298611.

It is an arithmetic number, because the mean of its divisors is an integer number (14326608).

Almost surely, 2^84168681 is an apocalyptic number.

It is an amenable number.

84168681 is a deficient number, since it is larger than the sum of its proper divisors (30444183).

84168681 is a wasteful number, since it uses less digits than its factorization.

84168681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596991.

The product of its digits is 73728, while the sum is 42.

The square root of 84168681 is about 9174.3490777275. The cubic root of 84168681 is about 438.2448694365.

The spelling of 84168681 in words is "eighty-four million, one hundred sixty-eight thousand, six hundred eighty-one".