82687205 has 4 divisors (see below), whose sum is σ = 99224652. Its totient is φ = 66149760.

The previous prime is 82687177. The next prime is 82687217. The reversal of 82687205 is 50278628.

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 27363361 + 55323844 = 5231^2 + 7438^2 .

It is not a de Polignac number, because 82687205 - 2⁸ = 82686949 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, 8268716 + ... + 8268725.

It is an arithmetic number, because the mean of its divisors is an integer number (24806163).

Almost surely, 2^82687205 is an apocalyptic number.

It is an amenable number.

82687205 is a deficient number, since it is larger than the sum of its proper divisors (16537447).

82687205 is a wasteful number, since it uses less digits than its factorization.

82687205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16537446.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 82687205 is about 9093.2505189289. The cubic root of 82687205 is about 435.6584119239.

The spelling of 82687205 in words is "eighty-two million, six hundred eighty-seven thousand, two hundred five".