66195363 has 8 divisors (see below), whose sum is σ = 95049808. Its totient is φ = 40735584.

The previous prime is 66195343. The next prime is 66195377. The reversal of 66195363 is 36359166.

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

It is not a de Polignac number, because 66195363 - 2¹² = 66191267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1697317 = 66195363 / (6 + 6 + 1 + 9 + 5 + 3 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66195343) 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, 848620 + ... + 848697.

It is an arithmetic number, because the mean of its divisors is an integer number (11881226).

Almost surely, 2^66195363 is an apocalyptic number.

66195363 is a deficient number, since it is larger than the sum of its proper divisors (28854445).

66195363 is a wasteful number, since it uses less digits than its factorization.

66195363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697333.

The product of its digits is 87480, while the sum is 39.

The square root of 66195363 is about 8136.0532815364. The cubic root of 66195363 is about 404.5223510818.

The spelling of 66195363 in words is "sixty-six million, one hundred ninety-five thousand, three hundred sixty-three".