845714561 has 2 divisors, whose sum is σ = 845714562. Its totient is φ = 845714560.

The previous prime is 845714557. The next prime is 845714581. The reversal of 845714561 is 165417548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845704561 + 10000 = 29081^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 845714561 - 2² = 845714557 is a prime.

It is not a weakly prime, because it can be changed into another prime (845714581) 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, 422857280 + 422857281.

It is an arithmetic number, because the mean of its divisors is an integer number (422857281).

Almost surely, 2^845714561 is an apocalyptic number.

It is an amenable number.

845714561 is a deficient number, since it is larger than the sum of its proper divisors (1).

845714561 is an equidigital number, since it uses as much as digits as its factorization.

845714561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 845714561 is about 29081.1719330566. The cubic root of 845714561 is about 945.6736091059.

The spelling of 845714561 in words is "eight hundred forty-five million, seven hundred fourteen thousand, five hundred sixty-one".