66753273 has 8 divisors (see below), whose sum is σ = 92073600. Its totient is φ = 42967568.

The previous prime is 66753259. The next prime is 66753283. The reversal of 66753273 is 37235766.

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

It is a cyclic number.

It is not a de Polignac number, because 66753273 - 2⁴ = 66753257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66753233) 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 7 ways as a sum of consecutive naturals, for example, 383553 + ... + 383726.

It is an arithmetic number, because the mean of its divisors is an integer number (11509200).

Almost surely, 2^66753273 is an apocalyptic number.

It is an amenable number.

66753273 is a deficient number, since it is larger than the sum of its proper divisors (25320327).

66753273 is a wasteful number, since it uses less digits than its factorization.

66753273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767311.

The product of its digits is 158760, while the sum is 39.

The square root of 66753273 is about 8170.2676210758. The cubic root of 66753273 is about 405.6556427967.

The spelling of 66753273 in words is "sixty-six million, seven hundred fifty-three thousand, two hundred seventy-three".