998220164 has 12 divisors (see below), whose sum is σ = 1747147584. Its totient is φ = 499035144.

The previous prime is 998220163. The next prime is 998220211. The reversal of 998220164 is 461022899.

It is not an unprimeable number, because it can be changed into a prime (998220163) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20249 + ... + 49055.

It is an arithmetic number, because the mean of its divisors is an integer number (145595632).

Almost surely, 2^998220164 is an apocalyptic number.

It is an amenable number.

998220164 is a deficient number, since it is larger than the sum of its proper divisors (748927420).

998220164 is a wasteful number, since it uses less digits than its factorization.

998220164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37474 (or 37472 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 998220164 is about 31594.6223905272. The cubic root of 998220164 is about 999.4063690053.

The spelling of 998220164 in words is "nine hundred ninety-eight million, two hundred twenty thousand, one hundred sixty-four".