197270285 has 4 divisors (see below), whose sum is σ = 236724348. Its totient is φ = 157816224.

The previous prime is 197270257. The next prime is 197270323. The reversal of 197270285 is 582072791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582072791 = 20333 ⋅28627.

It can be written as a sum of positive squares in 2 ways, for example, as 126945289 + 70324996 = 11267^2 + 8386^2 .

It is a cyclic number.

It is not a de Polignac number, because 197270285 - 2⁶ = 197270221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19727024 + ... + 19727033.

It is an arithmetic number, because the mean of its divisors is an integer number (59181087).

Almost surely, 2^197270285 is an apocalyptic number.

It is an amenable number.

197270285 is a deficient number, since it is larger than the sum of its proper divisors (39454063).

197270285 is an equidigital number, since it uses as much as digits as its factorization.

197270285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39454062.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 197270285 is about 14045.2940517456. The cubic root of 197270285 is about 582.1307722893.

The spelling of 197270285 in words is "one hundred ninety-seven million, two hundred seventy thousand, two hundred eighty-five".