197374609 has 4 divisors (see below), whose sum is σ = 204180660. Its totient is φ = 190568560.

The previous prime is 197374547. The next prime is 197374633. The reversal of 197374609 is 906473791.

197374609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96432400 + 100942209 = 9820^2 + 10047^2 .

It is a cyclic number.

It is not a de Polignac number, because 197374609 - 2⁷ = 197374481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197374409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402982 + ... + 3403039.

It is an arithmetic number, because the mean of its divisors is an integer number (51045165).

Almost surely, 2^197374609 is an apocalyptic number.

It is an amenable number.

197374609 is a deficient number, since it is larger than the sum of its proper divisors (6806051).

197374609 is an equidigital number, since it uses as much as digits as its factorization.

197374609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806050.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 197374609 is about 14049.0074026602. The cubic root of 197374609 is about 582.2333718071.

The spelling of 197374609 in words is "one hundred ninety-seven million, three hundred seventy-four thousand, six hundred nine".