85699577 has 2 divisors, whose sum is σ = 85699578. Its totient is φ = 85699576.

The previous prime is 85699561. The next prime is 85699583. The reversal of 85699577 is 77599658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69288976 + 16410601 = 8324^2 + 4051^2 .

It is a cyclic number.

It is not a de Polignac number, because 85699577 - 2⁴ = 85699561 is a prime.

It is not a weakly prime, because it can be changed into another prime (85699517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42849788 + 42849789.

It is an arithmetic number, because the mean of its divisors is an integer number (42849789).

Almost surely, 2^85699577 is an apocalyptic number.

It is an amenable number.

85699577 is a deficient number, since it is larger than the sum of its proper divisors (1).

85699577 is an equidigital number, since it uses as much as digits as its factorization.

85699577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The square root of 85699577 is about 9257.4066022834. The cubic root of 85699577 is about 440.8859165036.

The spelling of 85699577 in words is "eighty-five million, six hundred ninety-nine thousand, five hundred seventy-seven".