198785475 has 48 divisors (see below), whose sum is σ = 417354240. Its totient is φ = 90871200.

The previous prime is 198785417. The next prime is 198785491. The reversal of 198785475 is 574587891.

198785475 is a `hidden beast` number, since 1 + 98 + 7 + 8 + 547 + 5 = 666.

It is not a de Polignac number, because 198785475 - 2²⁴ = 182008259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16311 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (8694880).

Almost surely, 2^198785475 is an apocalyptic number.

198785475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198785475 is an abundant number, since it is smaller than the sum of its proper divisors (218568765).

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

198785475 is a wasteful number, since it uses less digits than its factorization.

198785475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42097 (or 42086 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 198785475 is about 14099.1302923265. The cubic root of 198785475 is about 583.6173791258.

The spelling of 198785475 in words is "one hundred ninety-eight million, seven hundred eighty-five thousand, four hundred seventy-five".