83665275 has 24 divisors (see below), whose sum is σ = 138686064. Its totient is φ = 44505600.

The previous prime is 83665273. The next prime is 83665331. The reversal of 83665275 is 57256638.

It is not a de Polignac number, because 83665275 - 2¹ = 83665273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83665273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33055 + ... + 35495.

It is an arithmetic number, because the mean of its divisors is an integer number (5778586).

Almost surely, 2^83665275 is an apocalyptic number.

83665275 is a deficient number, since it is larger than the sum of its proper divisors (55020789).

83665275 is a wasteful number, since it uses less digits than its factorization.

83665275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911 (or 2906 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 83665275 is about 9146.8724162962. The cubic root of 83665275 is about 437.3694195330.

The spelling of 83665275 in words is "eighty-three million, six hundred sixty-five thousand, two hundred seventy-five".