82203665 has 8 divisors (see below), whose sum is σ = 98734248. Its totient is φ = 65703040.

The previous prime is 82203643. The next prime is 82203727. The reversal of 82203665 is 56630228.

It can be written as a sum of positive squares in 4 ways, for example, as 10445824 + 71757841 = 3232^2 + 8471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82203665 - 2⁸ = 82203409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 926 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (12341781).

Almost surely, 2^82203665 is an apocalyptic number.

It is an amenable number.

82203665 is a deficient number, since it is larger than the sum of its proper divisors (16530583).

82203665 is a wasteful number, since it uses less digits than its factorization.

82203665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14979.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 82203665 is about 9066.6236824961. The cubic root of 82203665 is about 434.8075336515.

The spelling of 82203665 in words is "eighty-two million, two hundred three thousand, six hundred sixty-five".