66233331 has 12 divisors (see below), whose sum is σ = 96314400. Its totient is φ = 43858320.

The previous prime is 66233311. The next prime is 66233333. The reversal of 66233331 is 13333266.

66233331 is a `hidden beast` number, since 6 + 623 + 3 + 3 + 31 = 666.

It is not a de Polignac number, because 66233331 - 2⁷ = 66233203 is a prime.

It is a super-2 number, since 2×66233331² = 8773708270711122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66233295 and 66233304.

It is not an unprimeable number, because it can be changed into a prime (66233333) 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 11 ways as a sum of consecutive naturals, for example, 23355 + ... + 26036.

It is an arithmetic number, because the mean of its divisors is an integer number (8026200).

Almost surely, 2^66233331 is an apocalyptic number.

66233331 is a deficient number, since it is larger than the sum of its proper divisors (30081069).

66233331 is a wasteful number, since it uses less digits than its factorization.

66233331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49546 (or 49543 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

The square root of 66233331 is about 8138.3862651019. The cubic root of 66233331 is about 404.5996775911.

Adding to 66233331 its reverse (13333266), we get a palindrome (79566597).

It can be divided in two parts, 66233 and 331, that added together give a square (66564 = 258²).

The spelling of 66233331 in words is "sixty-six million, two hundred thirty-three thousand, three hundred thirty-one".