169797961 has 2 divisors, whose sum is σ = 169797962. Its totient is φ = 169797960.

The previous prime is 169797959. The next prime is 169797973.

169797961 is nontrivially palindromic in base 10.

169797961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167055625 + 2742336 = 12925^2 + 1656^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 169797961 - 2¹ = 169797959 is a prime.

Together with 169797959, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (169797941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84898980 + 84898981.

It is an arithmetic number, because the mean of its divisors is an integer number (84898981).

Almost surely, 2^169797961 is an apocalyptic number.

It is an amenable number.

169797961 is a deficient number, since it is larger than the sum of its proper divisors (1).

169797961 is an equidigital number, since it uses as much as digits as its factorization.

169797961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 55.

The square root of 169797961 is about 13030.6546650581. The cubic root of 169797961 is about 553.7462824020.

The spelling of 169797961 in words is "one hundred sixty-nine million, seven hundred ninety-seven thousand, nine hundred sixty-one".