196964689 has 2 divisors, whose sum is σ = 196964690. Its totient is φ = 196964688.

The previous prime is 196964687. The next prime is 196964707. The reversal of 196964689 is 986469691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172134400 + 24830289 = 13120^2 + 4983^2 .

It is a cyclic number.

It is not a de Polignac number, because 196964689 - 2¹ = 196964687 is a prime.

Together with 196964687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (196964687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98482344 + 98482345.

It is an arithmetic number, because the mean of its divisors is an integer number (98482345).

Almost surely, 2^196964689 is an apocalyptic number.

It is an amenable number.

196964689 is a deficient number, since it is larger than the sum of its proper divisors (1).

196964689 is an equidigital number, since it uses as much as digits as its factorization.

196964689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 58.

The square root of 196964689 is about 14034.4108889543. The cubic root of 196964689 is about 581.8300194820.

The spelling of 196964689 in words is "one hundred ninety-six million, nine hundred sixty-four thousand, six hundred eighty-nine".