169656961 has 2 divisors, whose sum is σ = 169656962. Its totient is φ = 169656960.

The previous prime is 169656959. The next prime is 169656967.

169656961 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114896961 + 54760000 = 10719^2 + 7400^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 169656961 - 2¹ = 169656959 is a prime.

Together with 169656959, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (169656967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84828480 + 84828481.

It is an arithmetic number, because the mean of its divisors is an integer number (84828481).

Almost surely, 2^169656961 is an apocalyptic number.

It is an amenable number.

169656961 is a deficient number, since it is larger than the sum of its proper divisors (1).

169656961 is an equidigital number, since it uses as much as digits as its factorization.

169656961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 49.

The square root of 169656961 is about 13025.2432222972. The cubic root of 169656961 is about 553.5929632310.

The spelling of 169656961 in words is "one hundred sixty-nine million, six hundred fifty-six thousand, nine hundred sixty-one".