66382763 has 4 divisors (see below), whose sum is σ = 66428208. Its totient is φ = 66337320.

The previous prime is 66382759. The next prime is 66382777. The reversal of 66382763 is 36728366.

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 66382763 - 2² = 66382759 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 66382763.

It is not an unprimeable number, because it can be changed into a prime (66385763) 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, 20456 + ... + 23477.

It is an arithmetic number, because the mean of its divisors is an integer number (16607052).

Almost surely, 2^66382763 is an apocalyptic number.

66382763 is a deficient number, since it is larger than the sum of its proper divisors (45445).

66382763 is a wasteful number, since it uses less digits than its factorization.

66382763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45444.

The product of its digits is 217728, while the sum is 41.

The square root of 66382763 is about 8147.5617825212. The cubic root of 66382763 is about 404.9037275615.

The spelling of 66382763 in words is "sixty-six million, three hundred eighty-two thousand, seven hundred sixty-three".