66607233 has 32 divisors (see below), whose sum is σ = 111685632. Its totient is φ = 34586640.

The previous prime is 66607223. The next prime is 66607237. The reversal of 66607233 is 33270666.

It is not a de Polignac number, because 66607233 - 2⁹ = 66606721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 66607194 and 66607203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66607237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26760 + ... + 29142.

It is an arithmetic number, because the mean of its divisors is an integer number (3490176).

Almost surely, 2^66607233 is an apocalyptic number.

It is an amenable number.

66607233 is a deficient number, since it is larger than the sum of its proper divisors (45078399).

66607233 is a wasteful number, since it uses less digits than its factorization.

66607233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 66607233 is about 8161.3254438234. The cubic root of 66607233 is about 405.3596013576.

Adding to 66607233 its reverse (33270666), we get a palindrome (99877899).

The spelling of 66607233 in words is "sixty-six million, six hundred seven thousand, two hundred thirty-three".