65988195 has 64 divisors (see below), whose sum is σ = 134507520. Its totient is φ = 26869248.

The previous prime is 65988193. The next prime is 65988211. The reversal of 65988195 is 59188956.

It is not a de Polignac number, because 65988195 - 2¹ = 65988193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65988191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38752 + ... + 40418.

It is an arithmetic number, because the mean of its divisors is an integer number (2101680).

Almost surely, 2^65988195 is an apocalyptic number.

65988195 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65988195 is an abundant number, since it is smaller than the sum of its proper divisors (68519325).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65988195 is a wasteful number, since it uses less digits than its factorization.

65988195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724.

The product of its digits is 777600, while the sum is 51.

The square root of 65988195 is about 8123.3118246193. The cubic root of 65988195 is about 404.0999062627.

The spelling of 65988195 in words is "sixty-five million, nine hundred eighty-eight thousand, one hundred ninety-five".