65775198 has 16 divisors (see below), whose sum is σ = 131630976. Its totient is φ = 21911640.

The previous prime is 65775197. The next prime is 65775209. The reversal of 65775198 is 89157756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65775197) 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 7 ways as a sum of consecutive naturals, for example, 14863 + ... + 18773.

It is an arithmetic number, because the mean of its divisors is an integer number (8226936).

Almost surely, 2^65775198 is an apocalyptic number.

65775198 is an abundant number, since it is smaller than the sum of its proper divisors (65855778).

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

65775198 is a wasteful number, since it uses less digits than its factorization.

65775198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719.

The product of its digits is 529200, while the sum is 48.

The square root of 65775198 is about 8110.1909965179. The cubic root of 65775198 is about 403.6646524414.

It can be divided in two parts, 657 and 75198, that added together give a triangular number (75855 = T₃₈₉).

The spelling of 65775198 in words is "sixty-five million, seven hundred seventy-five thousand, one hundred ninety-eight".