66163383 has 48 divisors (see below), whose sum is σ = 113611680. Its totient is φ = 36576000.

The previous prime is 66163373. The next prime is 66163403. The reversal of 66163383 is 38336166.

66163383 is a `hidden beast` number, since 6 + 616 + 3 + 38 + 3 = 666.

It is not a de Polignac number, because 66163383 - 2⁵ = 66163351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66163313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129733 + ... + 130241.

It is an arithmetic number, because the mean of its divisors is an integer number (2366910).

Almost surely, 2^66163383 is an apocalyptic number.

66163383 is a deficient number, since it is larger than the sum of its proper divisors (47448297).

66163383 is a wasteful number, since it uses less digits than its factorization.

66163383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 637 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 66163383 is about 8134.0877177468. The cubic root of 66163383 is about 404.4571969277.

It can be divided in two parts, 6616 and 3383, that added together give a palindrome (9999).

The spelling of 66163383 in words is "sixty-six million, one hundred sixty-three thousand, three hundred eighty-three".