85695221 has 2 divisors, whose sum is σ = 85695222. Its totient is φ = 85695220.

The previous prime is 85695161. The next prime is 85695227. The reversal of 85695221 is 12259658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76755121 + 8940100 = 8761^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 85695221 - 2⁶ = 85695157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85695227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42847610 + 42847611.

It is an arithmetic number, because the mean of its divisors is an integer number (42847611).

Almost surely, 2^85695221 is an apocalyptic number.

It is an amenable number.

85695221 is a deficient number, since it is larger than the sum of its proper divisors (1).

85695221 is an equidigital number, since it uses as much as digits as its factorization.

85695221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 85695221 is about 9257.1713282190. The cubic root of 85695221 is about 440.8784464877.

The spelling of 85695221 in words is "eighty-five million, six hundred ninety-five thousand, two hundred twenty-one".