66011103 has 6 divisors (see below), whose sum is σ = 95349384. Its totient is φ = 44007396.

The previous prime is 66011093. The next prime is 66011123. The reversal of 66011103 is 30111066.

66011103 is a `hidden beast` number, since 660 + 1 + 1 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 66011103 - 2¹⁰ = 66010079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66011123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3667275 + ... + 3667292.

It is an arithmetic number, because the mean of its divisors is an integer number (15891564).

Almost surely, 2^66011103 is an apocalyptic number.

66011103 is a deficient number, since it is larger than the sum of its proper divisors (29338281).

66011103 is a wasteful number, since it uses less digits than its factorization.

66011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7334573 (or 7334570 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 66011103 is about 8124.7217183113. The cubic root of 66011103 is about 404.1466623511.

Adding to 66011103 its reverse (30111066), we get a palindrome (96122169).

The spelling of 66011103 in words is "sixty-six million, eleven thousand, one hundred three".