66108803 has 2 divisors, whose sum is σ = 66108804. Its totient is φ = 66108802.

The previous prime is 66108797. The next prime is 66108821. The reversal of 66108803 is 30880166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66108803 - 2¹⁶ = 66043267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66108803.

It is not a weakly prime, because it can be changed into another prime (66108853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33054401 + 33054402.

It is an arithmetic number, because the mean of its divisors is an integer number (33054402).

Almost surely, 2^66108803 is an apocalyptic number.

66108803 is a deficient number, since it is larger than the sum of its proper divisors (1).

66108803 is an equidigital number, since it uses as much as digits as its factorization.

66108803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 66108803 is about 8130.7320088661. The cubic root of 66108803 is about 404.3459503652.

Adding to 66108803 its reverse (30880166), we get a palindrome (96988969).

The spelling of 66108803 in words is "sixty-six million, one hundred eight thousand, eight hundred three".