84566161 has 8 divisors (see below), whose sum is σ = 85195880. Its totient is φ = 83939328.

The previous prime is 84566129. The next prime is 84566173. The reversal of 84566161 is 16166548.

It can be written as a sum of positive squares in 4 ways, for example, as 5017600 + 79548561 = 2240^2 + 8919^2 .

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 84566161 - 2⁵ = 84566129 is a prime.

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 84566161.

It is not an unprimeable number, because it can be changed into a prime (84566761) 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, 109585 + ... + 110353.

It is an arithmetic number, because the mean of its divisors is an integer number (10649485).

Almost surely, 2^84566161 is an apocalyptic number.

It is an amenable number.

84566161 is a deficient number, since it is larger than the sum of its proper divisors (629719).

84566161 is a wasteful number, since it uses less digits than its factorization.

84566161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 34560, while the sum is 37.

The square root of 84566161 is about 9195.9861352658. The cubic root of 84566161 is about 438.9336453589.

The spelling of 84566161 in words is "eighty-four million, five hundred sixty-six thousand, one hundred sixty-one".