66282869 has 4 divisors (see below), whose sum is σ = 66926496. Its totient is φ = 65639244.

The previous prime is 66282857. The next prime is 66282871. The reversal of 66282869 is 96828266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66282869 is a prime.

It is a super-2 number, since 2×66282869² = 8786837445742322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66282889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321659 + ... + 321864.

It is an arithmetic number, because the mean of its divisors is an integer number (16731624).

Almost surely, 2^66282869 is an apocalyptic number.

It is an amenable number.

66282869 is a deficient number, since it is larger than the sum of its proper divisors (643627).

66282869 is a wasteful number, since it uses less digits than its factorization.

66282869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643626.

The product of its digits is 497664, while the sum is 47.

The square root of 66282869 is about 8141.4291742912. The cubic root of 66282869 is about 404.7005234123.

The spelling of 66282869 in words is "sixty-six million, two hundred eighty-two thousand, eight hundred sixty-nine".