198606836736 has 880 divisors, whose sum is σ = 748434817152. Its totient is φ = 51385466880.

The previous prime is 198606836731. The next prime is 198606836773. The reversal of 198606836736 is 637638606891.

198606836736 is a `hidden beast` number, since 19 + 8 + 606 + 8 + 3 + 6 + 7 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198606836731) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 772789120 + ... + 772789376.

Almost surely, 2^198606836736 is an apocalyptic number.

198606836736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198606836736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374217408576).

198606836736 is an abundant number, since it is smaller than the sum of its proper divisors (549827980416).

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

198606836736 is an equidigital number, since it uses as much as digits as its factorization.

198606836736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 198606836736 in words is "one hundred ninety-eight billion, six hundred six million, eight hundred thirty-six thousand, seven hundred thirty-six".