83331641 has 4 divisors (see below), whose sum is σ = 83401332. Its totient is φ = 83261952.

The previous prime is 83331613. The next prime is 83331653. The reversal of 83331641 is 14613338.

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 17397241 + 65934400 = 4171^2 + 8120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83331641 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 (83331601) 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, 33020 + ... + 35453.

It is an arithmetic number, because the mean of its divisors is an integer number (20850333).

Almost surely, 2^83331641 is an apocalyptic number.

It is an amenable number.

83331641 is a deficient number, since it is larger than the sum of its proper divisors (69691).

83331641 is a wasteful number, since it uses less digits than its factorization.

83331641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69690.

The product of its digits is 5184, while the sum is 29.

The square root of 83331641 is about 9128.6165983680. The cubic root of 83331641 is about 436.7872755695.

Adding to 83331641 its reverse (14613338), we get a palindrome (97944979).

The spelling of 83331641 in words is "eighty-three million, three hundred thirty-one thousand, six hundred forty-one".