82713613 has 4 divisors (see below), whose sum is σ = 83317500. Its totient is φ = 82109728.

The previous prime is 82713601. The next prime is 82713629. The reversal of 82713613 is 31631728.

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 30614089 + 52099524 = 5533^2 + 7218^2 .

It is a cyclic number.

It is not a de Polignac number, because 82713613 - 2⁹ = 82713101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82713013) 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, 301738 + ... + 302011.

It is an arithmetic number, because the mean of its divisors is an integer number (20829375).

Almost surely, 2^82713613 is an apocalyptic number.

It is an amenable number.

82713613 is a deficient number, since it is larger than the sum of its proper divisors (603887).

82713613 is a wasteful number, since it uses less digits than its factorization.

82713613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603886.

The product of its digits is 6048, while the sum is 31.

The square root of 82713613 is about 9094.7024690201. The cubic root of 82713613 is about 435.7047860587.

The spelling of 82713613 in words is "eighty-two million, seven hundred thirteen thousand, six hundred thirteen".