66889303 has 16 divisors (see below), whose sum is σ = 75267360. Its totient is φ = 59031936.

The previous prime is 66889301. The next prime is 66889307. The reversal of 66889303 is 30398866.

It is a cyclic number.

It is not a de Polignac number, because 66889303 - 2¹ = 66889301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66889303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66889301) 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 15 ways as a sum of consecutive naturals, for example, 27201 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (4704210).

Almost surely, 2^66889303 is an apocalyptic number.

66889303 is a deficient number, since it is larger than the sum of its proper divisors (8378057).

66889303 is a wasteful number, since it uses less digits than its factorization.

66889303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 66889303 is about 8178.5880810810. The cubic root of 66889303 is about 405.9310045585.

The spelling of 66889303 in words is "sixty-six million, eight hundred eighty-nine thousand, three hundred three".