196685807 has 2 divisors, whose sum is σ = 196685808. Its totient is φ = 196685806.

The previous prime is 196685779. The next prime is 196685837. The reversal of 196685807 is 708586691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196685807 - 2¹⁴ = 196669423 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 (196685837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98342903 + 98342904.

It is an arithmetic number, because the mean of its divisors is an integer number (98342904).

Almost surely, 2^196685807 is an apocalyptic number.

196685807 is a deficient number, since it is larger than the sum of its proper divisors (1).

196685807 is an equidigital number, since it uses as much as digits as its factorization.

196685807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 196685807 is about 14024.4717191059. The cubic root of 196685807 is about 581.5552856998. Note that the first 3 decimals are identical.

The spelling of 196685807 in words is "one hundred ninety-six million, six hundred eighty-five thousand, eight hundred seven".