82713205 has 4 divisors (see below), whose sum is σ = 99255852. Its totient is φ = 66170560.

The previous prime is 82713181. The next prime is 82713217. The reversal of 82713205 is 50231728.

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 19000881 + 63712324 = 4359^2 + 7982^2 .

It is not a de Polignac number, because 82713205 - 2⁵ = 82713173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8271316 + ... + 8271325.

It is an arithmetic number, because the mean of its divisors is an integer number (24813963).

Almost surely, 2^82713205 is an apocalyptic number.

It is an amenable number.

82713205 is a deficient number, since it is larger than the sum of its proper divisors (16542647).

82713205 is a wasteful number, since it uses less digits than its factorization.

82713205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16542646.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 82713205 is about 9094.6800383521. The cubic root of 82713205 is about 435.7040696598.

It can be divided in two parts, 8271 and 3205, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 82713205 in words is "eighty-two million, seven hundred thirteen thousand, two hundred five".