66303286 has 16 divisors (see below), whose sum is σ = 114164640. Its totient is φ = 28290240.

The previous prime is 66303277. The next prime is 66303311. The reversal of 66303286 is 68230366.

It is a super-2 number, since 2×66303286² = 8792251468795592, which contains 22 as substring.

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, 7135 + ... + 13546.

It is an arithmetic number, because the mean of its divisors is an integer number (7135290).

Almost surely, 2^66303286 is an apocalyptic number.

66303286 is a deficient number, since it is larger than the sum of its proper divisors (47861354).

66303286 is a wasteful number, since it uses less digits than its factorization.

66303286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20919.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 66303286 is about 8142.6829730747. The cubic root of 66303286 is about 404.7420722190.

The spelling of 66303286 in words is "sixty-six million, three hundred three thousand, two hundred eighty-six".