197796864 has 132 divisors (see below), whose sum is σ = 552886512. Its totient is φ = 62853120.

The previous prime is 197796847. The next prime is 197796877. The reversal of 197796864 is 468697791.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2952159 + ... + 2952225.

Almost surely, 2^197796864 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 197796864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276443256).

197796864 is an abundant number, since it is smaller than the sum of its proper divisors (355089648).

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

197796864 is an equidigital number, since it uses as much as digits as its factorization.

197796864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 103 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 197796864 is about 14064.0273037278. The cubic root of 197796864 is about 582.6482779943.

The spelling of 197796864 in words is "one hundred ninety-seven million, seven hundred ninety-six thousand, eight hundred sixty-four".