66223833 has 12 divisors (see below), whose sum is σ = 95613840. Its totient is φ = 40752816.

The previous prime is 66223819. The next prime is 66223841. The reversal of 66223833 is 33832266.

It is not a de Polignac number, because 66223833 - 2⁹ = 66223321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66223794 and 66223803.

It is not an unprimeable number, because it can be changed into a prime (66223853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64803 + ... + 65816.

It is an arithmetic number, because the mean of its divisors is an integer number (7967820).

Almost surely, 2^66223833 is an apocalyptic number.

It is an amenable number.

66223833 is a deficient number, since it is larger than the sum of its proper divisors (29390007).

66223833 is a wasteful number, since it uses less digits than its factorization.

66223833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130648 (or 130635 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 66223833 is about 8137.8027132636. The cubic root of 66223833 is about 404.5803365162.

The spelling of 66223833 in words is "sixty-six million, two hundred twenty-three thousand, eight hundred thirty-three".