66066195 has 32 divisors (see below), whose sum is σ = 114714432. Its totient is φ = 32274432.

The previous prime is 66066181. The next prime is 66066197. The reversal of 66066195 is 59166066.

66066195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66066195 - 2¹² = 66062099 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (66066197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25479 + ... + 27951.

It is an arithmetic number, because the mean of its divisors is an integer number (3584826).

Almost surely, 2^66066195 is an apocalyptic number.

66066195 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66066195 is a deficient number, since it is larger than the sum of its proper divisors (48648237).

66066195 is a wasteful number, since it uses less digits than its factorization.

66066195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 66066195 is about 8128.1114042562. Note that the first 3 decimals coincide. The cubic root of 66066195 is about 404.2590629206.

The spelling of 66066195 in words is "sixty-six million, sixty-six thousand, one hundred ninety-five".