86688993 has 8 divisors (see below), whose sum is σ = 115628800. Its totient is φ = 57770928.

The previous prime is 86688983. The next prime is 86689013. The reversal of 86688993 is 39988668.

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

It is not a de Polignac number, because 86688993 - 2⁸ = 86688737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86688913) 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, 10803 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (14453600).

Almost surely, 2^86688993 is an apocalyptic number.

It is an amenable number.

86688993 is a deficient number, since it is larger than the sum of its proper divisors (28939807).

86688993 is a wasteful number, since it uses less digits than its factorization.

86688993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871.

The product of its digits is 4478976, while the sum is 57.

The square root of 86688993 is about 9310.6924017497. The cubic root of 86688993 is about 442.5761291342.

The spelling of 86688993 in words is "eighty-six million, six hundred eighty-eight thousand, nine hundred ninety-three".