85776617 has 2 divisors, whose sum is σ = 85776618. Its totient is φ = 85776616.

The previous prime is 85776601. The next prime is 85776641. The reversal of 85776617 is 71667758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85174441 + 602176 = 9229^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 85776617 - 2⁴ = 85776601 is a prime.

It is a super-3 number, since 3×85776617³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (85776667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42888308 + 42888309.

It is an arithmetic number, because the mean of its divisors is an integer number (42888309).

Almost surely, 2^85776617 is an apocalyptic number.

It is an amenable number.

85776617 is a deficient number, since it is larger than the sum of its proper divisors (1).

85776617 is an equidigital number, since it uses as much as digits as its factorization.

85776617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 47.

The square root of 85776617 is about 9261.5666601283. The cubic root of 85776617 is about 441.0179890270.

The spelling of 85776617 in words is "eighty-five million, seven hundred seventy-six thousand, six hundred seventeen".