198387660 has 24 divisors (see below), whose sum is σ = 555485616. Its totient is φ = 52903360.

The previous prime is 198387653. The next prime is 198387667. The reversal of 198387660 is 66783891.

It is an interprime number because it is at equal distance from previous prime (198387653) and next prime (198387667).

It is not an unprimeable number, because it can be changed into a prime (198387667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653171 + ... + 1653290.

It is an arithmetic number, because the mean of its divisors is an integer number (23145234).

Almost surely, 2^198387660 is an apocalyptic number.

198387660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198387660 is an abundant number, since it is smaller than the sum of its proper divisors (357097956).

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

198387660 is a wasteful number, since it uses less digits than its factorization.

198387660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306473 (or 3306471 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 198387660 is about 14085.0154419511. The cubic root of 198387660 is about 583.2278020432.

The spelling of 198387660 in words is "one hundred ninety-eight million, three hundred eighty-seven thousand, six hundred sixty".