83665385 has 8 divisors (see below), whose sum is σ = 100616256. Its totient is φ = 66787120.

The previous prime is 83665369. The next prime is 83665397. The reversal of 83665385 is 58356638.

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

It is not a de Polignac number, because 83665385 - 2⁴ = 83665369 is a prime.

It is a Duffinian number.

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, 15581 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (12577032).

Almost surely, 2^83665385 is an apocalyptic number.

It is an amenable number.

83665385 is a deficient number, since it is larger than the sum of its proper divisors (16950871).

83665385 is a wasteful number, since it uses less digits than its factorization.

83665385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36303.

The product of its digits is 518400, while the sum is 44.

The square root of 83665385 is about 9146.8784292785. The cubic root of 83665385 is about 437.3696112119.

The spelling of 83665385 in words is "eighty-three million, six hundred sixty-five thousand, three hundred eighty-five".