66733163 has 8 divisors (see below), whose sum is σ = 78328032. Its totient is φ = 55653696.

The previous prime is 66733157. The next prime is 66733171. The reversal of 66733163 is 36133766.

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

It is not a de Polignac number, because 66733163 - 2⁶ = 66733099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66733663) 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, 128570 + ... + 129087.

It is an arithmetic number, because the mean of its divisors is an integer number (9791004).

Almost surely, 2^66733163 is an apocalyptic number.

66733163 is a deficient number, since it is larger than the sum of its proper divisors (11594869).

66733163 is a wasteful number, since it uses less digits than its factorization.

66733163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257701.

The product of its digits is 40824, while the sum is 35.

The square root of 66733163 is about 8169.0368465322. The cubic root of 66733163 is about 405.6149029501.

The spelling of 66733163 in words is "sixty-six million, seven hundred thirty-three thousand, one hundred sixty-three".