195717864 has 32 divisors (see below), whose sum is σ = 502521120. Its totient is φ = 63475776.

The previous prime is 195717857. The next prime is 195717869. The reversal of 195717864 is 468717591.

It is not an unprimeable number, because it can be changed into a prime (195717869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109314 + ... + 111089.

It is an arithmetic number, because the mean of its divisors is an integer number (15703785).

Almost surely, 2^195717864 is an apocalyptic number.

It is an amenable number.

195717864 is an abundant number, since it is smaller than the sum of its proper divisors (306803256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195717864 is a wasteful number, since it uses less digits than its factorization.

195717864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220449 (or 220445 counting only the distinct ones).

The product of its digits is 423360, while the sum is 48.

The square root of 195717864 is about 13989.9200855473. The cubic root of 195717864 is about 580.5997205387.

The spelling of 195717864 in words is "one hundred ninety-five million, seven hundred seventeen thousand, eight hundred sixty-four".