86643084631 has 4 divisors (see below), whose sum is σ = 91203247000. Its totient is φ = 82082922264.

The previous prime is 86643084571. The next prime is 86643084643. The reversal of 86643084631 is 13648034668.

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

It is a cyclic number.

It is not a de Polignac number, because 86643084631 - 2⁷ = 86643084503 is a prime.

It is a super-2 number, since 2×86643084631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86643084431) 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 3 ways as a sum of consecutive naturals, for example, 2280081156 + ... + 2280081193.

It is an arithmetic number, because the mean of its divisors is an integer number (22800811750).

Almost surely, 2^86643084631 is an apocalyptic number.

86643084631 is a deficient number, since it is larger than the sum of its proper divisors (4560162369).

86643084631 is a wasteful number, since it uses less digits than its factorization.

86643084631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560162368.

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 86643084631 in words is "eighty-six billion, six hundred forty-three million, eighty-four thousand, six hundred thirty-one".