195740687 has 6 divisors (see below), whose sum is σ = 200400552. Its totient is φ = 191186772.

The previous prime is 195740653. The next prime is 195740689. The reversal of 195740687 is 786047591.

195740687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 195740687 - 2¹⁴ = 195724303 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 (195740689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51083 + ... + 54780.

It is an arithmetic number, because the mean of its divisors is an integer number (33400092).

Almost surely, 2^195740687 is an apocalyptic number.

195740687 is a deficient number, since it is larger than the sum of its proper divisors (4659865).

195740687 is an equidigital number, since it uses as much as digits as its factorization.

195740687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105949 (or 105906 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 195740687 is about 13990.7357562067. The cubic root of 195740687 is about 580.6222879088.

The spelling of 195740687 in words is "one hundred ninety-five million, seven hundred forty thousand, six hundred eighty-seven".