66855103 has 8 divisors (see below), whose sum is σ = 78031872. Its totient is φ = 56084856.

The previous prime is 66855073. The next prime is 66855149. The reversal of 66855103 is 30155866.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66855103 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 (66855163) 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, 101275 + ... + 101932.

It is an arithmetic number, because the mean of its divisors is an integer number (9753984).

Almost surely, 2^66855103 is an apocalyptic number.

66855103 is a deficient number, since it is larger than the sum of its proper divisors (11176769).

66855103 is a wasteful number, since it uses less digits than its factorization.

66855103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203261.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 66855103 is about 8176.4969883196. The cubic root of 66855103 is about 405.8618096027.

The spelling of 66855103 in words is "sixty-six million, eight hundred fifty-five thousand, one hundred three".