198996165 has 24 divisors (see below), whose sum is σ = 353342808. Its totient is φ = 103541760.

The previous prime is 198996163. The next prime is 198996197. The reversal of 198996165 is 561699891.

198996165 is a `hidden beast` number, since 19 + 8 + 9 + 9 + 616 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 777924 + 198218241 = 882^2 + 14079^2 .

It is not a de Polignac number, because 198996165 - 2¹ = 198996163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198996163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52084 + ... + 55773.

It is an arithmetic number, because the mean of its divisors is an integer number (14722617).

Almost surely, 2^198996165 is an apocalyptic number.

198996165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198996165 is a deficient number, since it is larger than the sum of its proper divisors (154346643).

198996165 is a wasteful number, since it uses less digits than its factorization.

198996165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107909 (or 107906 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 198996165 is about 14106.6000510399. The cubic root of 198996165 is about 583.8234956763.

The spelling of 198996165 in words is "one hundred ninety-eight million, nine hundred ninety-six thousand, one hundred sixty-five".