82640706589 has 8 divisors (see below), whose sum is σ = 94462899840. Its totient is φ = 70822607856.

The previous prime is 82640706569. The next prime is 82640706601. The reversal of 82640706589 is 98560704628.

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

It is not a de Polignac number, because 82640706589 - 2¹¹ = 82640704541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82640706569) by changing a digit.

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, 980254 + ... + 1061215.

It is an arithmetic number, because the mean of its divisors is an integer number (11807862480).

Almost surely, 2^82640706589 is an apocalyptic number.

It is an amenable number.

82640706589 is a deficient number, since it is larger than the sum of its proper divisors (11822193251).

82640706589 is a wasteful number, since it uses less digits than its factorization.

82640706589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047259.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 82640706589 in words is "eighty-two billion, six hundred forty million, seven hundred six thousand, five hundred eighty-nine".