66274293 has 8 divisors (see below), whose sum is σ = 92207808. Its totient is φ = 42261824.

The previous prime is 66274237. The next prime is 66274301. The reversal of 66274293 is 39247266.

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 66274293 - 2¹⁷ = 66143221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66274093) 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, 480180 + ... + 480317.

It is an arithmetic number, because the mean of its divisors is an integer number (11525976).

Almost surely, 2^66274293 is an apocalyptic number.

It is an amenable number.

66274293 is a deficient number, since it is larger than the sum of its proper divisors (25933515).

66274293 is a wasteful number, since it uses less digits than its factorization.

66274293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960523.

The product of its digits is 108864, while the sum is 39.

The square root of 66274293 is about 8140.9024683999. The cubic root of 66274293 is about 404.6830686187.

The spelling of 66274293 in words is "sixty-six million, two hundred seventy-four thousand, two hundred ninety-three".