84131166 has 64 divisors (see below), whose sum is σ = 197821440. Its totient is φ = 23358720.

The previous prime is 84131161. The next prime is 84131197. The reversal of 84131166 is 66113148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84131161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265240 + ... + 265556.

It is an arithmetic number, because the mean of its divisors is an integer number (3090960).

Almost surely, 2^84131166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84131166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98910720).

84131166 is an abundant number, since it is smaller than the sum of its proper divisors (113690274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84131166 is a wasteful number, since it uses less digits than its factorization.

84131166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its digits is 3456, while the sum is 30.

The square root of 84131166 is about 9172.3042906349. The cubic root of 84131166 is about 438.1797494128.

The spelling of 84131166 in words is "eighty-four million, one hundred thirty-one thousand, one hundred sixty-six".