82665673 has 4 divisors (see below), whose sum is σ = 82684800. Its totient is φ = 82646548.

The previous prime is 82665643. The next prime is 82665677. The reversal of 82665673 is 37656628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82665673 - 2¹⁷ = 82534601 is a prime.

It is a super-2 number, since 2×82665673² = 13667226985085858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82665677) 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, 336 + ... + 12862.

It is an arithmetic number, because the mean of its divisors is an integer number (20671200).

Almost surely, 2^82665673 is an apocalyptic number.

It is an amenable number.

82665673 is a deficient number, since it is larger than the sum of its proper divisors (19127).

82665673 is a wasteful number, since it uses less digits than its factorization.

82665673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19126.

The product of its digits is 362880, while the sum is 43.

The square root of 82665673 is about 9092.0664867785. The cubic root of 82665673 is about 435.6205930486.

It can be divided in two parts, 82665 and 673, that added together give a palindrome (83338).

The spelling of 82665673 in words is "eighty-two million, six hundred sixty-five thousand, six hundred seventy-three".