198877696 has 80 divisors (see below), whose sum is σ = 427867704. Its totient is φ = 92012544.

The previous prime is 198877691. The next prime is 198877697. The reversal of 198877696 is 696778891.

198877696 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 142086400 + 56791296 = 11920^2 + 7536^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198877691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635236 + ... + 635548.

Almost surely, 2^198877696 is an apocalyptic number.

198877696 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 198877696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213933852).

198877696 is an abundant number, since it is smaller than the sum of its proper divisors (228990008).

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

198877696 is an equidigital number, since it uses as much as digits as its factorization.

198877696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 405 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 61.

The square root of 198877696 is about 14102.4003630588. The cubic root of 198877696 is about 583.7076161975.

The spelling of 198877696 in words is "one hundred ninety-eight million, eight hundred seventy-seven thousand, six hundred ninety-six".