197487297 has 18 divisors (see below), whose sum is σ = 331833138. Its totient is φ = 112849632.

The previous prime is 197487293. The next prime is 197487341. The reversal of 197487297 is 792784791.

197487297 is digitally balanced in base 2, 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 only one way, i.e., 197374401 + 112896 = 14049^2 + 336^2 .

It is not a de Polignac number, because 197487297 - 2² = 197487293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197487293) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 223468 + ... + 224349.

Almost surely, 2^197487297 is an apocalyptic number.

It is an amenable number.

197487297 is a deficient number, since it is larger than the sum of its proper divisors (134345841).

197487297 is a wasteful number, since it uses less digits than its factorization.

197487297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447837 (or 447827 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 197487297 is about 14053.0173628299. The cubic root of 197487297 is about 582.3441564583.

The spelling of 197487297 in words is "one hundred ninety-seven million, four hundred eighty-seven thousand, two hundred ninety-seven".