66198098 has 16 divisors (see below), whose sum is σ = 100921920. Its totient is φ = 32562000.

The previous prime is 66198089. The next prime is 66198101. The reversal of 66198098 is 89089166.

66198098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31913 + ... + 33923.

It is an arithmetic number, because the mean of its divisors is an integer number (6307620).

Almost surely, 2^66198098 is an apocalyptic number.

66198098 is a deficient number, since it is larger than the sum of its proper divisors (34723822).

66198098 is a wasteful number, since it uses less digits than its factorization.

66198098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 66198098 is about 8136.2213588373. The cubic root of 66198098 is about 404.5279222343.

The spelling of 66198098 in words is "sixty-six million, one hundred ninety-eight thousand, ninety-eight".