195970727 has 2 divisors, whose sum is σ = 195970728. Its totient is φ = 195970726.

The previous prime is 195970717. The next prime is 195970751. The reversal of 195970727 is 727079591.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195970727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195970717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97985363 + 97985364.

It is an arithmetic number, because the mean of its divisors is an integer number (97985364).

Almost surely, 2^195970727 is an apocalyptic number.

195970727 is a deficient number, since it is larger than the sum of its proper divisors (1).

195970727 is an equidigital number, since it uses as much as digits as its factorization.

195970727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 277830, while the sum is 47.

The square root of 195970727 is about 13998.9544966758. The cubic root of 195970727 is about 580.8496534498.

The spelling of 195970727 in words is "one hundred ninety-five million, nine hundred seventy thousand, seven hundred twenty-seven".