66611303 has 8 divisors (see below), whose sum is σ = 72815760. Its totient is φ = 60431680.

The previous prime is 66611297. The next prime is 66611309. The reversal of 66611303 is 30311666.

It is an interprime number because it is at equal distance from previous prime (66611297) and next prime (66611309).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66611303 - 2⁶ = 66611239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66611309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (9101970).

Almost surely, 2^66611303 is an apocalyptic number.

66611303 is a deficient number, since it is larger than the sum of its proper divisors (6204457).

66611303 is a wasteful number, since it uses less digits than its factorization.

66611303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12417.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 66611303 is about 8161.5747867676. The cubic root of 66611303 is about 405.3678576180.

Adding to 66611303 its reverse (30311666), we get a palindrome (96922969).

The spelling of 66611303 in words is "sixty-six million, six hundred eleven thousand, three hundred three".