85476817 has 2 divisors, whose sum is σ = 85476818. Its totient is φ = 85476816.

The previous prime is 85476793. The next prime is 85476821. The reversal of 85476817 is 71867458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85451536 + 25281 = 9244^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 85476817 - 2⁷ = 85476689 is a prime.

It is not a weakly prime, because it can be changed into another prime (85476917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42738408 + 42738409.

It is an arithmetic number, because the mean of its divisors is an integer number (42738409).

Almost surely, 2^85476817 is an apocalyptic number.

It is an amenable number.

85476817 is a deficient number, since it is larger than the sum of its proper divisors (1).

85476817 is an equidigital number, since it uses as much as digits as its factorization.

85476817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 85476817 is about 9245.3673263965. The cubic root of 85476817 is about 440.5035849229.

The spelling of 85476817 in words is "eighty-five million, four hundred seventy-six thousand, eight hundred seventeen".