86745823 has 4 divisors (see below), whose sum is σ = 86784048. Its totient is φ = 86707600.

The previous prime is 86745821. The next prime is 86745847. The reversal of 86745823 is 32854768.

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 86745823 - 2¹ = 86745821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86745823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86745821) 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, 15478 + ... + 20323.

It is an arithmetic number, because the mean of its divisors is an integer number (21696012).

Almost surely, 2^86745823 is an apocalyptic number.

86745823 is a deficient number, since it is larger than the sum of its proper divisors (38225).

86745823 is a wasteful number, since it uses less digits than its factorization.

86745823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38224.

The product of its digits is 322560, while the sum is 43.

The square root of 86745823 is about 9313.7437692906. The cubic root of 86745823 is about 442.6728200227.

The spelling of 86745823 in words is "eighty-six million, seven hundred forty-five thousand, eight hundred twenty-three".