86710506643 has 4 divisors (see below), whose sum is σ = 86711545080. Its totient is φ = 86709468208.

The previous prime is 86710506583. The next prime is 86710506671. The reversal of 86710506643 is 34660501768.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86710506643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86710506593 and 86710506602.

It is not an unprimeable number, because it can be changed into a prime (86710506143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381853 + ... + 565006.

It is an arithmetic number, because the mean of its divisors is an integer number (21677886270).

Almost surely, 2^86710506643 is an apocalyptic number.

86710506643 is a deficient number, since it is larger than the sum of its proper divisors (1038437).

86710506643 is an equidigital number, since it uses as much as digits as its factorization.

86710506643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038436.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 86710506643 in words is "eighty-six billion, seven hundred ten million, five hundred six thousand, six hundred forty-three".