82065481 has 3 divisors (see below), whose sum is σ = 82074541. Its totient is φ = 82056422.

The previous prime is 82065439. The next prime is 82065493. The reversal of 82065481 is 18456028.

The square root of 82065481 is 9059.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 82065481 - 2¹⁷ = 81934409 is a prime.

It is a super-2 number, since 2×82065481² = 13469486343522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82062481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4530 + ... + 13588.

Almost surely, 2^82065481 is an apocalyptic number.

82065481 is the 9059-th square number.

82065481 is the 4530-th centered octagonal number.

It is an amenable number.

82065481 is a deficient number, since it is larger than the sum of its proper divisors (9060).

82065481 is an frugal number, since it uses more digits than its factorization.

82065481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18118 (or 9059 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The cubic root of 82065481 is about 434.5637604881.

The spelling of 82065481 in words is "eighty-two million, sixty-five thousand, four hundred eighty-one".