197965 has 12 divisors (see below), whose sum is σ = 254196. Its totient is φ = 147968.

The previous prime is 197963. The next prime is 197969. The reversal of 197965 is 569791.

It can be written as a sum of positive squares in 6 ways, for example, as 13924 + 184041 = 118^2 + 429^2 .

It is not a de Polignac number, because 197965 - 2¹ = 197963 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 (197963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1377 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (21183).

2¹⁹⁷⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

197965 is a deficient number, since it is larger than the sum of its proper divisors (56231).

197965 is a wasteful number, since it uses less digits than its factorization.

197965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 159 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 197965 is about 444.9325791623. The cubic root of 197965 is about 58.2813323425.

The spelling of 197965 in words is "one hundred ninety-seven thousand, nine hundred sixty-five".