82506739 has 12 divisors (see below), whose sum is σ = 96181344. Its totient is φ = 70569744.

The previous prime is 82506733. The next prime is 82506751. The reversal of 82506739 is 93760528.

It is not a de Polignac number, because 82506739 - 2²³ = 74118131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82506733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25782 + ... + 28804.

It is an arithmetic number, because the mean of its divisors is an integer number (8015112).

Almost surely, 2^82506739 is an apocalyptic number.

82506739 is a deficient number, since it is larger than the sum of its proper divisors (13674605).

82506739 is a wasteful number, since it uses less digits than its factorization.

82506739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3587 counting only the distinct ones).

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

The square root of 82506739 is about 9083.3220244578. The cubic root of 82506739 is about 435.3412375076.

The spelling of 82506739 in words is "eighty-two million, five hundred six thousand, seven hundred thirty-nine".