8165761 has 2 divisors, whose sum is σ = 8165762. Its totient is φ = 8165760.

The previous prime is 8165753. The next prime is 8165767. The reversal of 8165761 is 1675618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 9025 = 2856^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 8165761 - 2³ = 8165753 is a prime.

It is not a weakly prime, because it can be changed into another prime (8165767) 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, 4082880 + 4082881.

It is an arithmetic number, because the mean of its divisors is an integer number (4082881).

Almost surely, 2^8165761 is an apocalyptic number.

It is an amenable number.

8165761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8165761 is an equidigital number, since it uses as much as digits as its factorization.

8165761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 34.

The square root of 8165761 is about 2857.5795701957. The cubic root of 8165761 is about 201.3719094710.

It can be divided in two parts, 81657 and 61, that added together give a palindrome (81718).

The spelling of 8165761 in words is "eight million, one hundred sixty-five thousand, seven hundred sixty-one".