83608505 has 4 divisors (see below), whose sum is σ = 100330212. Its totient is φ = 66886800.

The previous prime is 83608477. The next prime is 83608513. The reversal of 83608505 is 50580638.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50580638 = 2 ⋅25290319.

It can be written as a sum of positive squares in 2 ways, for example, as 52113961 + 31494544 = 7219^2 + 5612^2 .

It is not a de Polignac number, because 83608505 - 2¹⁰ = 83607481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8360846 + ... + 8360855.

It is an arithmetic number, because the mean of its divisors is an integer number (25082553).

Almost surely, 2^83608505 is an apocalyptic number.

It is an amenable number.

83608505 is a deficient number, since it is larger than the sum of its proper divisors (16721707).

83608505 is a wasteful number, since it uses less digits than its factorization.

83608505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16721706.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 83608505 is about 9143.7686431799. The cubic root of 83608505 is about 437.2704733454.

The spelling of 83608505 in words is "eighty-three million, six hundred eight thousand, five hundred five".