8160961 has 2 divisors, whose sum is σ = 8160962. Its totient is φ = 8160960.

The previous prime is 8160959. The next prime is 8160989. The reversal of 8160961 is 1690618.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 4225 = 2856^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 8160961 - 2¹ = 8160959 is a prime.

Together with 8160959, it forms a pair of twin primes.

It is a Chen prime.

8160961 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (8160931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080480 + 4080481.

It is an arithmetic number, because the mean of its divisors is an integer number (4080481).

Almost surely, 2^8160961 is an apocalyptic number.

It is an amenable number.

8160961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8160961 is an equidigital number, since it uses as much as digits as its factorization.

8160961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 8160961 is about 2856.7395751101. The cubic root of 8160961 is about 201.3324449059.

The spelling of 8160961 in words is "eight million, one hundred sixty thousand, nine hundred sixty-one".