85356647 has 2 divisors, whose sum is σ = 85356648. Its totient is φ = 85356646.

The previous prime is 85356641. The next prime is 85356679. The reversal of 85356647 is 74665358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85356647 - 2⁴ = 85356631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85356598 and 85356607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85356641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42678323 + 42678324.

It is an arithmetic number, because the mean of its divisors is an integer number (42678324).

Almost surely, 2^85356647 is an apocalyptic number.

85356647 is a deficient number, since it is larger than the sum of its proper divisors (1).

85356647 is an equidigital number, since it uses as much as digits as its factorization.

85356647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The square root of 85356647 is about 9238.8661100808. The cubic root of 85356647 is about 440.2970566348.

The spelling of 85356647 in words is "eighty-five million, three hundred fifty-six thousand, six hundred forty-seven".