66930103 has 4 divisors (see below), whose sum is σ = 70452760. Its totient is φ = 63407448.

The previous prime is 66930089. The next prime is 66930133. The reversal of 66930103 is 30103966.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30103966 = 2 ⋅15051983.

It is a cyclic number.

It is not a de Polignac number, because 66930103 - 2⁹ = 66929591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66930133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761300 + ... + 1761337.

It is an arithmetic number, because the mean of its divisors is an integer number (17613190).

Almost surely, 2^66930103 is an apocalyptic number.

66930103 is a deficient number, since it is larger than the sum of its proper divisors (3522657).

66930103 is a wasteful number, since it uses less digits than its factorization.

66930103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522656.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 66930103 is about 8181.0820189019. The cubic root of 66930103 is about 406.0135220811.

The spelling of 66930103 in words is "sixty-six million, nine hundred thirty thousand, one hundred three".