66198348 has 18 divisors (see below), whose sum is σ = 167334804. Its totient is φ = 22066104.

The previous prime is 66198343. The next prime is 66198389. The reversal of 66198348 is 84389166.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66198343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 919386 + ... + 919457.

It is an arithmetic number, because the mean of its divisors is an integer number (9296378).

Almost surely, 2^66198348 is an apocalyptic number.

It is an amenable number.

66198348 is an abundant number, since it is smaller than the sum of its proper divisors (101136456).

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

66198348 is a wasteful number, since it uses less digits than its factorization.

66198348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838853 (or 1838848 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 66198348 is about 8136.2367222199. The cubic root of 66198348 is about 404.5284314728.

The spelling of 66198348 in words is "sixty-six million, one hundred ninety-eight thousand, three hundred forty-eight".