83811065 has 8 divisors (see below), whose sum is σ = 108309768. Its totient is φ = 61891200.

The previous prime is 83811043. The next prime is 83811097. The reversal of 83811065 is 56011838.

It can be written as a sum of positive squares in 4 ways, for example, as 344569 + 83466496 = 587^2 + 9136^2 .

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

It is not a de Polignac number, because 83811065 - 2⁶ = 83811001 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644636 + ... + 644765.

It is an arithmetic number, because the mean of its divisors is an integer number (13538721).

Almost surely, 2^83811065 is an apocalyptic number.

It is an amenable number.

83811065 is a deficient number, since it is larger than the sum of its proper divisors (24498703).

83811065 is a wasteful number, since it uses less digits than its factorization.

83811065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289419.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 83811065 is about 9154.8383382777. The cubic root of 83811065 is about 437.6233165305.

The spelling of 83811065 in words is "eighty-three million, eight hundred eleven thousand, sixty-five".