86643633 has 8 divisors (see below), whose sum is σ = 115587328. Its totient is φ = 57731184.

The previous prime is 86643593. The next prime is 86643653. The reversal of 86643633 is 33634668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86643633 - 2¹⁷ = 86512561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86643591 and 86643600.

It is not an unprimeable number, because it can be changed into a prime (86643653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310 + ... + 13167.

It is an arithmetic number, because the mean of its divisors is an integer number (14448416).

Almost surely, 2^86643633 is an apocalyptic number.

It is an amenable number.

86643633 is a deficient number, since it is larger than the sum of its proper divisors (28943695).

86643633 is a wasteful number, since it uses less digits than its factorization.

86643633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15623.

The product of its digits is 186624, while the sum is 39.

The square root of 86643633 is about 9308.2561739565. The cubic root of 86643633 is about 442.4989230399.

The spelling of 86643633 in words is "eighty-six million, six hundred forty-three thousand, six hundred thirty-three".