86820248637 has 36 divisors (see below), whose sum is σ = 131245834720. Its totient is φ = 55300606416.

The previous prime is 86820248623. The next prime is 86820248639. The reversal of 86820248637 is 73684202868.

86820248637 is a `hidden beast` number, since 86 + 82 + 0 + 2 + 486 + 3 + 7 = 666.

It is not a de Polignac number, because 86820248637 - 2⁷ = 86820248509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86820248639) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4365438 + ... + 4385280.

Almost surely, 2^86820248637 is an apocalyptic number.

It is an amenable number.

86820248637 is a deficient number, since it is larger than the sum of its proper divisors (44425586083).

86820248637 is a wasteful number, since it uses less digits than its factorization.

86820248637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20814 (or 20788 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 86820248637 in words is "eighty-six billion, eight hundred twenty million, two hundred forty-eight thousand, six hundred thirty-seven".