85875761 has 2 divisors, whose sum is σ = 85875762. Its totient is φ = 85875760.

The previous prime is 85875743. The next prime is 85875781. The reversal of 85875761 is 16757858.

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., 79995136 + 5880625 = 8944^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 85875761 - 2⁶ = 85875697 is a prime.

It is not a weakly prime, because it can be changed into another prime (85875781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42937880 + 42937881.

It is an arithmetic number, because the mean of its divisors is an integer number (42937881).

Almost surely, 2^85875761 is an apocalyptic number.

It is an amenable number.

85875761 is a deficient number, since it is larger than the sum of its proper divisors (1).

85875761 is an equidigital number, since it uses as much as digits as its factorization.

85875761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 47.

The square root of 85875761 is about 9266.9175565557. The cubic root of 85875761 is about 441.1878389377.

The spelling of 85875761 in words is "eighty-five million, eight hundred seventy-five thousand, seven hundred sixty-one".