197363700665 has 4 divisors (see below), whose sum is σ = 236836440804. Its totient is φ = 157890960528.

The previous prime is 197363700661. The next prime is 197363700697. The reversal of 197363700665 is 566007363791.

It is a happy number.

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 133041103504 + 64322597161 = 364748^2 + 253619^2 .

It is a cyclic number.

It is not a de Polignac number, because 197363700665 - 2² = 197363700661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197363700661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19736370062 + ... + 19736370071.

It is an arithmetic number, because the mean of its divisors is an integer number (59209110201).

Almost surely, 2^197363700665 is an apocalyptic number.

It is an amenable number.

197363700665 is a deficient number, since it is larger than the sum of its proper divisors (39472740139).

197363700665 is an equidigital number, since it uses as much as digits as its factorization.

197363700665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39472740138.

The product of its (nonzero) digits is 4286520, while the sum is 53.

The spelling of 197363700665 in words is "one hundred ninety-seven billion, three hundred sixty-three million, seven hundred thousand, six hundred sixty-five".