66284983 has 4 divisors (see below), whose sum is σ = 66807040. Its totient is φ = 65762928.

The previous prime is 66284969. The next prime is 66285031. The reversal of 66284983 is 38948266.

It is a happy number.

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 66284983 - 2⁵ = 66284951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66284903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260838 + ... + 261091.

It is an arithmetic number, because the mean of its divisors is an integer number (16701760).

Almost surely, 2^66284983 is an apocalyptic number.

66284983 is a deficient number, since it is larger than the sum of its proper divisors (522057).

66284983 is a wasteful number, since it uses less digits than its factorization.

66284983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522056.

The product of its digits is 497664, while the sum is 46.

The square root of 66284983 is about 8141.5590030411. The cubic root of 66284983 is about 404.7048258201.

It can be divided in two parts, 6628 and 4983, that added together give a palindrome (11611).

The spelling of 66284983 in words is "sixty-six million, two hundred eighty-four thousand, nine hundred eighty-three".