66323679 has 8 divisors (see below), whose sum is σ = 88504752. Its totient is φ = 44179200.

The previous prime is 66323669. The next prime is 66323687. The reversal of 66323679 is 97632366.

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

It is not a de Polignac number, because 66323679 - 2¹⁵ = 66290911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66323679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66323669) 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, 4594 + ... + 12399.

It is an arithmetic number, because the mean of its divisors is an integer number (11063094).

Almost surely, 2^66323679 is an apocalyptic number.

66323679 is a deficient number, since it is larger than the sum of its proper divisors (22181073).

66323679 is a wasteful number, since it uses less digits than its factorization.

66323679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18297.

The product of its digits is 244944, while the sum is 42.

The square root of 66323679 is about 8143.9351053407. The cubic root of 66323679 is about 404.7835636719.

It can be divided in two parts, 663 and 23679, that added together give a palindrome (24342).

The spelling of 66323679 in words is "sixty-six million, three hundred twenty-three thousand, six hundred seventy-nine".