198745680 has 160 divisors (see below), whose sum is σ = 708311808. Its totient is φ = 45158400.

The previous prime is 198745627. The next prime is 198745693. The reversal of 198745680 is 86547891.

198745680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471870 + ... + 472290.

Almost surely, 2^198745680 is an apocalyptic number.

198745680 is a gapful number since it is divisible by the number (10) 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 198745680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354155904).

198745680 is an abundant number, since it is smaller than the sum of its proper divisors (509566128).

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

198745680 is a wasteful number, since it uses less digits than its factorization.

198745680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 198745680 is about 14097.7189644283. The cubic root of 198745680 is about 583.5784316062.

The spelling of 198745680 in words is "one hundred ninety-eight million, seven hundred forty-five thousand, six hundred eighty".