84165385 has 8 divisors (see below), whose sum is σ = 106939656. Its totient is φ = 63371520.

The previous prime is 84165379. The next prime is 84165397. The reversal of 84165385 is 58356148.

It can be written as a sum of positive squares in 4 ways, for example, as 40921609 + 43243776 = 6397^2 + 6576^2 .

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

It is not a de Polignac number, because 84165385 - 2⁵ = 84165353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495006 + ... + 495175.

It is an arithmetic number, because the mean of its divisors is an integer number (13367457).

Almost surely, 2^84165385 is an apocalyptic number.

84165385 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

84165385 is a deficient number, since it is larger than the sum of its proper divisors (22774271).

84165385 is a wasteful number, since it uses less digits than its factorization.

84165385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990203.

The product of its digits is 115200, while the sum is 40.

The square root of 84165385 is about 9174.1694446963. The cubic root of 84165385 is about 438.2391488845.

The spelling of 84165385 in words is "eighty-four million, one hundred sixty-five thousand, three hundred eighty-five".