66287274 has 8 divisors (see below), whose sum is σ = 132574560. Its totient is φ = 22095756.

The previous prime is 66287237. The next prime is 66287281. The reversal of 66287274 is 47278266.

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

66287274 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5523934 + ... + 5523945.

It is an arithmetic number, because the mean of its divisors is an integer number (16571820).

Almost surely, 2^66287274 is an apocalyptic number.

66287274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66287274 is a wasteful number, since it uses less digits than its factorization.

66287274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11047884.

The product of its digits is 225792, while the sum is 42.

The square root of 66287274 is about 8141.6996996942. The cubic root of 66287274 is about 404.7094883547.

The spelling of 66287274 in words is "sixty-six million, two hundred eighty-seven thousand, two hundred seventy-four".