66103195 has 4 divisors (see below), whose sum is σ = 79323840. Its totient is φ = 52882552.

The previous prime is 66103189. The next prime is 66103229. The reversal of 66103195 is 59130166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66103195 - 2¹⁵ = 66070427 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6610315 + ... + 6610324.

It is an arithmetic number, because the mean of its divisors is an integer number (19830960).

Almost surely, 2^66103195 is an apocalyptic number.

66103195 is a deficient number, since it is larger than the sum of its proper divisors (13220645).

66103195 is a wasteful number, since it uses less digits than its factorization.

66103195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13220644.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 66103195 is about 8130.3871371540. The cubic root of 66103195 is about 404.3345165061.

The spelling of 66103195 in words is "sixty-six million, one hundred three thousand, one hundred ninety-five".