197962565 has 4 divisors (see below), whose sum is σ = 237555084. Its totient is φ = 158370048.

The previous prime is 197962561. The next prime is 197962573. The reversal of 197962565 is 565269791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565269791 = 7529 ⋅75079.

It can be written as a sum of positive squares in 2 ways, for example, as 156925729 + 41036836 = 12527^2 + 6406^2 .

It is a cyclic number.

It is not a de Polignac number, because 197962565 - 2² = 197962561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197962561) 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, 19796252 + ... + 19796261.

It is an arithmetic number, because the mean of its divisors is an integer number (59388771).

Almost surely, 2^197962565 is an apocalyptic number.

It is an amenable number.

197962565 is a deficient number, since it is larger than the sum of its proper divisors (39592519).

197962565 is an equidigital number, since it uses as much as digits as its factorization.

197962565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39592518.

The product of its digits is 1020600, while the sum is 50.

The square root of 197962565 is about 14069.9170217880. The cubic root of 197962565 is about 582.8109338509.

The spelling of 197962565 in words is "one hundred ninety-seven million, nine hundred sixty-two thousand, five hundred sixty-five".