86885023681 has 8 divisors (see below), whose sum is σ = 87981422760. Its totient is φ = 85794066432.

The previous prime is 86885023663. The next prime is 86885023697. The reversal of 86885023681 is 18632058868.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63171795600 + 23713228081 = 251340^2 + 153991^2 .

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 86885023681 - 2¹¹ = 86885021633 is a prime.

It is a super-2 number, since 2×86885023681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86885023651) 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, 1328320 + ... + 1392193.

It is an arithmetic number, because the mean of its divisors is an integer number (10997677845).

Almost surely, 2^86885023681 is an apocalyptic number.

It is an amenable number.

86885023681 is a deficient number, since it is larger than the sum of its proper divisors (1096399079).

86885023681 is a wasteful number, since it uses less digits than its factorization.

86885023681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720915.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 86885023681 in words is "eighty-six billion, eight hundred eighty-five million, twenty-three thousand, six hundred eighty-one".