82739065 has 8 divisors (see below), whose sum is σ = 99407880. Its totient is φ = 66110592.

The previous prime is 82739047. The next prime is 82739071. The reversal of 82739065 is 56093728.

It can be written as a sum of positive squares in 4 ways, for example, as 11048976 + 71690089 = 3324^2 + 8467^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 82739065 - 2⁷ = 82738937 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5370 + ... + 13939.

It is an arithmetic number, because the mean of its divisors is an integer number (12425985).

Almost surely, 2^82739065 is an apocalyptic number.

It is an amenable number.

82739065 is a deficient number, since it is larger than the sum of its proper divisors (16668815).

82739065 is a wasteful number, since it uses less digits than its factorization.

82739065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20171.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 82739065 is about 9096.1016375148. The cubic root of 82739065 is about 435.7494720564.

The spelling of 82739065 in words is "eighty-two million, seven hundred thirty-nine thousand, sixty-five".