82528613 has 4 divisors (see below), whose sum is σ = 84541548. Its totient is φ = 80515680.

The previous prime is 82528601. The next prime is 82528631. The reversal of 82528613 is 31682528.

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 11682724 + 70845889 = 3418^2 + 8417^2 .

It is a cyclic number.

It is not a de Polignac number, because 82528613 - 2⁸ = 82528357 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 (82528673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006406 + ... + 1006487.

It is an arithmetic number, because the mean of its divisors is an integer number (21135387).

Almost surely, 2^82528613 is an apocalyptic number.

It is an amenable number.

82528613 is a deficient number, since it is larger than the sum of its proper divisors (2012935).

82528613 is a wasteful number, since it uses less digits than its factorization.

82528613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012934.

The product of its digits is 23040, while the sum is 35.

The square root of 82528613 is about 9084.5260195566. The cubic root of 82528613 is about 435.3797063362.

The spelling of 82528613 in words is "eighty-two million, five hundred twenty-eight thousand, six hundred thirteen".