198072564 has 12 divisors (see below), whose sum is σ = 462169344. Its totient is φ = 66024184.

The previous prime is 198072557. The next prime is 198072583. The reversal of 198072564 is 465270891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8253012 + ... + 8253035.

It is an arithmetic number, because the mean of its divisors is an integer number (38514112).

Almost surely, 2^198072564 is an apocalyptic number.

It is an amenable number.

198072564 is an abundant number, since it is smaller than the sum of its proper divisors (264096780).

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

198072564 is a wasteful number, since it uses less digits than its factorization.

198072564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16506054 (or 16506052 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 198072564 is about 14073.8254927365. The cubic root of 198072564 is about 582.9188612420.

The spelling of 198072564 in words is "one hundred ninety-eight million, seventy-two thousand, five hundred sixty-four".