198694764 has 18 divisors (see below), whose sum is σ = 502256300. Its totient is φ = 66231576.

The previous prime is 198694757. The next prime is 198694777. The reversal of 198694764 is 467496891.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 198694764.

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 5 ways as a sum of consecutive naturals, for example, 2759614 + ... + 2759685.

Almost surely, 2^198694764 is an apocalyptic number.

It is an amenable number.

198694764 is an abundant number, since it is smaller than the sum of its proper divisors (303561536).

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

198694764 is a wasteful number, since it uses less digits than its factorization.

198694764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519309 (or 5519304 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 198694764 is about 14095.9130247033. The cubic root of 198694764 is about 583.5285923389.

The spelling of 198694764 in words is "one hundred ninety-eight million, six hundred ninety-four thousand, seven hundred sixty-four".