82665394 has 16 divisors (see below), whose sum is σ = 141841728. Its totient is φ = 35395632.

The previous prime is 82665391. The next prime is 82665397. The reversal of 82665394 is 49356628.

It is an interprime number because it is at equal distance from previous prime (82665391) and next prime (82665397).

It is a self number, because there is not a number n which added to its sum of digits gives 82665394.

It is not an unprimeable number, because it can be changed into a prime (82665391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19384 + ... + 23260.

It is an arithmetic number, because the mean of its divisors is an integer number (8865108).

Almost surely, 2^82665394 is an apocalyptic number.

82665394 is a deficient number, since it is larger than the sum of its proper divisors (59176334).

82665394 is a wasteful number, since it uses less digits than its factorization.

82665394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409.

The product of its digits is 311040, while the sum is 43.

The square root of 82665394 is about 9092.0511437189. The cubic root of 82665394 is about 435.6201029690.

The spelling of 82665394 in words is "eighty-two million, six hundred sixty-five thousand, three hundred ninety-four".