85165567 has 2 divisors, whose sum is σ = 85165568. Its totient is φ = 85165566.

The previous prime is 85165513. The next prime is 85165579. The reversal of 85165567 is 76556158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85165567 - 2¹⁹ = 84641279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85165667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42582783 + 42582784.

It is an arithmetic number, because the mean of its divisors is an integer number (42582784).

Almost surely, 2^85165567 is an apocalyptic number.

85165567 is a deficient number, since it is larger than the sum of its proper divisors (1).

85165567 is an equidigital number, since it uses as much as digits as its factorization.

85165567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 43.

The square root of 85165567 is about 9228.5192203300. The cubic root of 85165567 is about 439.9682604516.

The spelling of 85165567 in words is "eighty-five million, one hundred sixty-five thousand, five hundred sixty-seven".