83608121 has 4 divisors (see below), whose sum is σ = 83632500. Its totient is φ = 83583744.

The previous prime is 83608111. The next prime is 83608127. The reversal of 83608121 is 12180638.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35236096 + 48372025 = 5936^2 + 6955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83608121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83608127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5996 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (20908125).

Almost surely, 2^83608121 is an apocalyptic number.

It is an amenable number.

83608121 is a deficient number, since it is larger than the sum of its proper divisors (24379).

83608121 is a wasteful number, since it uses less digits than its factorization.

83608121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24378.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 83608121 is about 9143.7476452492. The cubic root of 83608121 is about 437.2698039075.

Adding to 83608121 its reverse (12180638), we get a palindrome (95788759).

The spelling of 83608121 in words is "eighty-three million, six hundred eight thousand, one hundred twenty-one".