82243613 has 4 divisors (see below), whose sum is σ = 82439388. Its totient is φ = 82047840.

The previous prime is 82243597. The next prime is 82243627. The reversal of 82243613 is 31634228.

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 196249 + 82047364 = 443^2 + 9058^2 .

It is a cyclic number.

It is not a de Polignac number, because 82243613 - 2⁴ = 82243597 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 (82243673) 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, 97256 + ... + 98097.

It is an arithmetic number, because the mean of its divisors is an integer number (20609847).

Almost surely, 2^82243613 is an apocalyptic number.

It is an amenable number.

82243613 is a deficient number, since it is larger than the sum of its proper divisors (195775).

82243613 is a wasteful number, since it uses less digits than its factorization.

82243613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195774.

The product of its digits is 6912, while the sum is 29.

The square root of 82243613 is about 9068.8264400638. The cubic root of 82243613 is about 434.8779558094.

The spelling of 82243613 in words is "eighty-two million, two hundred forty-three thousand, six hundred thirteen".