66001233 has 8 divisors (see below), whose sum is σ = 88180000. Its totient is φ = 43911648.

The previous prime is 66001217. The next prime is 66001249. The reversal of 66001233 is 33210066.

It is an interprime number because it is at equal distance from previous prime (66001217) and next prime (66001249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66001233 - 2⁴ = 66001217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66001213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20548 + ... + 23541.

It is an arithmetic number, because the mean of its divisors is an integer number (11022500).

Almost surely, 2^66001233 is an apocalyptic number.

It is an amenable number.

66001233 is a deficient number, since it is larger than the sum of its proper divisors (22178767).

66001233 is a wasteful number, since it uses less digits than its factorization.

66001233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44591.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 66001233 is about 8124.1142901857. The cubic root of 66001233 is about 404.1265186369.

Adding to 66001233 its reverse (33210066), we get a palindrome (99211299).

The spelling of 66001233 in words is "sixty-six million, one thousand, two hundred thirty-three".