84164005 has 8 divisors (see below), whose sum is σ = 101087352. Its totient is φ = 67270848.

The previous prime is 84163999. The next prime is 84164009. The reversal of 84164005 is 50046148.

It can be written as a sum of positive squares in 4 ways, for example, as 4133089 + 80030916 = 2033^2 + 8946^2 .

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 84164005 - 2²³ = 75775397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84164009) 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, 874 + ... + 13003.

It is an arithmetic number, because the mean of its divisors is an integer number (12635919).

Almost surely, 2^84164005 is an apocalyptic number.

It is an amenable number.

84164005 is a deficient number, since it is larger than the sum of its proper divisors (16923347).

84164005 is a wasteful number, since it uses less digits than its factorization.

84164005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 84164005 is about 9174.0942332200. The cubic root of 84164005 is about 438.2367537061.

It can be divided in two parts, 8416 and 4005, that added together give a palindrome (12421).

The spelling of 84164005 in words is "eighty-four million, one hundred sixty-four thousand, five".