82980613 has 4 divisors (see below), whose sum is σ = 83280460. Its totient is φ = 82680768.

The previous prime is 82980593. The next prime is 82980631. The reversal of 82980613 is 31608928.

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 18948609 + 64032004 = 4353^2 + 8002^2 .

It is a cyclic number.

It is not a de Polignac number, because 82980613 - 2¹⁷ = 82849541 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 (82980643) 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, 149508 + ... + 150061.

It is an arithmetic number, because the mean of its divisors is an integer number (20820115).

Almost surely, 2^82980613 is an apocalyptic number.

It is an amenable number.

82980613 is a deficient number, since it is larger than the sum of its proper divisors (299847).

82980613 is a wasteful number, since it uses less digits than its factorization.

82980613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299846.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 82980613 is about 9109.3695171510. The cubic root of 82980613 is about 436.1731016638.

The spelling of 82980613 in words is "eighty-two million, nine hundred eighty thousand, six hundred thirteen".