85011769 has 2 divisors, whose sum is σ = 85011770. Its totient is φ = 85011768.

The previous prime is 85011763. The next prime is 85011791. The reversal of 85011769 is 96711058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 28761769 = 7500^2 + 5363^2 .

It is a cyclic number.

It is not a de Polignac number, because 85011769 - 2³ = 85011761 is a prime.

It is a super-2 number, since 2×85011769² = 14454001737018722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85011761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42505884 + 42505885.

It is an arithmetic number, because the mean of its divisors is an integer number (42505885).

Almost surely, 2^85011769 is an apocalyptic number.

It is an amenable number.

85011769 is a deficient number, since it is larger than the sum of its proper divisors (1).

85011769 is an equidigital number, since it uses as much as digits as its factorization.

85011769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 85011769 is about 9220.1826988406. The cubic root of 85011769 is about 439.7032589414.

The spelling of 85011769 in words is "eighty-five million, eleven thousand, seven hundred sixty-nine".