196906961 has 2 divisors, whose sum is σ = 196906962. Its totient is φ = 196906960.

The previous prime is 196906901. The next prime is 196906973. The reversal of 196906961 is 169609691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193738561 + 3168400 = 13919^2 + 1780^2 .

It is an emirp because it is prime and its reverse (169609691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196906961 - 2²² = 192712657 is a prime.

196906961 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (196906901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98453480 + 98453481.

It is an arithmetic number, because the mean of its divisors is an integer number (98453481).

Almost surely, 2^196906961 is an apocalyptic number.

It is an amenable number.

196906961 is a deficient number, since it is larger than the sum of its proper divisors (1).

196906961 is an equidigital number, since it uses as much as digits as its factorization.

196906961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 196906961 is about 14032.3540790560. The cubic root of 196906961 is about 581.7731714492.

The spelling of 196906961 in words is "one hundred ninety-six million, nine hundred six thousand, nine hundred sixty-one".