66253286 has 16 divisors (see below), whose sum is σ = 110461968. Its totient is φ = 29546400.

The previous prime is 66253279. The next prime is 66253303. The reversal of 66253286 is 68235266.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 27245 + ... + 29576.

It is an arithmetic number, because the mean of its divisors is an integer number (6903873).

Almost surely, 2^66253286 is an apocalyptic number.

66253286 is a deficient number, since it is larger than the sum of its proper divisors (44208682).

66253286 is a wasteful number, since it uses less digits than its factorization.

66253286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56887.

The product of its digits is 103680, while the sum is 38.

The square root of 66253286 is about 8139.6121529223. The cubic root of 66253286 is about 404.6403065602.

It can be divided in two parts, 66 and 253286, that added together give a palindrome (253352).

The spelling of 66253286 in words is "sixty-six million, two hundred fifty-three thousand, two hundred eighty-six".