197687568 has 80 divisors (see below), whose sum is σ = 563463936. Its totient is φ = 59335680.

The previous prime is 197687561. The next prime is 197687569. The reversal of 197687568 is 865786791.

It is not an unprimeable number, because it can be changed into a prime (197687561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21721 + ... + 29447.

Almost surely, 2^197687568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197687568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281731968).

197687568 is an abundant number, since it is smaller than the sum of its proper divisors (365776368).

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

197687568 is a wasteful number, since it uses less digits than its factorization.

197687568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792 (or 7786 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 197687568 is about 14060.1411088225. The cubic root of 197687568 is about 582.5409408372.

The spelling of 197687568 in words is "one hundred ninety-seven million, six hundred eighty-seven thousand, five hundred sixty-eight".