85347761 has 2 divisors, whose sum is σ = 85347762. Its totient is φ = 85347760.

The previous prime is 85347739. The next prime is 85347797. The reversal of 85347761 is 16774358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 19088161 = 8140^2 + 4369^2 .

It is a cyclic number.

It is not a de Polignac number, because 85347761 - 2¹⁴ = 85331377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (85347721) 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, 42673880 + 42673881.

It is an arithmetic number, because the mean of its divisors is an integer number (42673881).

Almost surely, 2^85347761 is an apocalyptic number.

It is an amenable number.

85347761 is a deficient number, since it is larger than the sum of its proper divisors (1).

85347761 is an equidigital number, since it uses as much as digits as its factorization.

85347761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 85347761 is about 9238.3851943941. The cubic root of 85347761 is about 440.2817771553.

The spelling of 85347761 in words is "eighty-five million, three hundred forty-seven thousand, seven hundred sixty-one".