197566464 has 56 divisors (see below), whose sum is σ = 526877280. Its totient is φ = 65847296.

The previous prime is 197566429. The next prime is 197566489. The reversal of 197566464 is 464665791.

197566464 is digitally balanced in base 3, 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20557 + ... + 28595.

Almost surely, 2^197566464 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 197566464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263438640).

197566464 is an abundant number, since it is smaller than the sum of its proper divisors (329310816).

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

197566464 is an frugal number, since it uses more digits than its factorization.

197566464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068 (or 8044 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 197566464 is about 14055.8338066441. The cubic root of 197566464 is about 582.4219610927.

The spelling of 197566464 in words is "one hundred ninety-seven million, five hundred sixty-six thousand, four hundred sixty-four".