198622564 has 24 divisors (see below), whose sum is σ = 405699840. Its totient is φ = 83312256.

The previous prime is 198622519. The next prime is 198622583. The reversal of 198622564 is 465226891.

It is a self number, because there is not a number n which added to its sum of digits gives 198622564.

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, 74149 + ... + 76780.

It is an arithmetic number, because the mean of its divisors is an integer number (16904160).

Almost surely, 2^198622564 is an apocalyptic number.

198622564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

198622564 is an abundant number, since it is smaller than the sum of its proper divisors (207077276).

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

198622564 is a wasteful number, since it uses less digits than its factorization.

198622564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150987 (or 150985 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 198622564 is about 14093.3517659924. The cubic root of 198622564 is about 583.4579045704.

The spelling of 198622564 in words is "one hundred ninety-eight million, six hundred twenty-two thousand, five hundred sixty-four".