85026680665 has 8 divisors (see below), whose sum is σ = 102124027080. Its totient is φ = 67960004352.

The previous prime is 85026680659. The next prime is 85026680677. The reversal of 85026680665 is 56608662058.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5130570384 + 79896110281 = 71628^2 + 282659^2 .

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 85026680665 - 2⁷ = 85026680537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7661424 + ... + 7672513.

It is an arithmetic number, because the mean of its divisors is an integer number (12765503385).

Almost surely, 2^85026680665 is an apocalyptic number.

It is an amenable number.

85026680665 is a deficient number, since it is larger than the sum of its proper divisors (17097346415).

85026680665 is a wasteful number, since it uses less digits than its factorization.

85026680665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15335051.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 85026680665 in words is "eighty-five billion, twenty-six million, six hundred eighty thousand, six hundred sixty-five".