198701655 has 32 divisors (see below), whose sum is σ = 328816128. Its totient is φ = 102384000.

The previous prime is 198701647. The next prime is 198701731. The reversal of 198701655 is 556107891.

It is not a de Polignac number, because 198701655 - 2³ = 198701647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82620 + ... + 84990.

It is an arithmetic number, because the mean of its divisors is an integer number (10275504).

Almost surely, 2^198701655 is an apocalyptic number.

198701655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198701655 is a deficient number, since it is larger than the sum of its proper divisors (130114473).

198701655 is a wasteful number, since it uses less digits than its factorization.

198701655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567.

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 198701655 is about 14096.1574551365. The cubic root of 198701655 is about 583.5353381115.

The spelling of 198701655 in words is "one hundred ninety-eight million, seven hundred one thousand, six hundred fifty-five".