66351303 has 12 divisors (see below), whose sum is σ = 96096000. Its totient is φ = 44116416.

The previous prime is 66351301. The next prime is 66351317. The reversal of 66351303 is 30315366.

66351303 is a `hidden beast` number, since 6 + 6 + 351 + 303 = 666.

It is not a de Polignac number, because 66351303 - 2¹ = 66351301 is a prime.

It is a super-3 number, since 3×66351303³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66351301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6178 + ... + 13071.

It is an arithmetic number, because the mean of its divisors is an integer number (8008000).

Almost surely, 2^66351303 is an apocalyptic number.

66351303 is a deficient number, since it is larger than the sum of its proper divisors (29744697).

66351303 is a wasteful number, since it uses less digits than its factorization.

66351303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19638 (or 19635 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 66351303 is about 8145.6309147911. The cubic root of 66351303 is about 404.8397537048.

Adding to 66351303 its reverse (30315366), we get a palindrome (96666669).

The spelling of 66351303 in words is "sixty-six million, three hundred fifty-one thousand, three hundred three".