198146660 has 24 divisors (see below), whose sum is σ = 416899896. Its totient is φ = 79107840.

The previous prime is 198146657. The next prime is 198146677. The reversal of 198146660 is 66641891.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 194490916 = 1912^2 + 13946^2 .

It is a super-3 number, since 3×198146660³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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, 1664 + ... + 19976.

It is an arithmetic number, because the mean of its divisors is an integer number (17370829).

Almost surely, 2^198146660 is an apocalyptic number.

198146660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198146660 is an abundant number, since it is smaller than the sum of its proper divisors (218753236).

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

198146660 is a wasteful number, since it uses less digits than its factorization.

198146660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18863 (or 18861 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 198146660 is about 14076.4576509859. The cubic root of 198146660 is about 582.9915392719.

The spelling of 198146660 in words is "one hundred ninety-eight million, one hundred forty-six thousand, six hundred sixty".