83706065 has 4 divisors (see below), whose sum is σ = 100447284. Its totient is φ = 66964848.

The previous prime is 83706061. The next prime is 83706067. The reversal of 83706065 is 56060738.

It is a happy number.

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 48553024 + 35153041 = 6968^2 + 5929^2 .

It is a cyclic number.

It is not a de Polignac number, because 83706065 - 2² = 83706061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83706061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8370602 + ... + 8370611.

It is an arithmetic number, because the mean of its divisors is an integer number (25111821).

Almost surely, 2^83706065 is an apocalyptic number.

It is an amenable number.

83706065 is a deficient number, since it is larger than the sum of its proper divisors (16741219).

83706065 is a wasteful number, since it uses less digits than its factorization.

83706065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16741218.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 83706065 is about 9149.1018684896. The cubic root of 83706065 is about 437.4404860542.

It can be divided in two parts, 8 and 3706065, that added together give a palindrome (3706073).

The spelling of 83706065 in words is "eighty-three million, seven hundred six thousand, sixty-five".