85146647 has 2 divisors, whose sum is σ = 85146648. Its totient is φ = 85146646.

The previous prime is 85146637. The next prime is 85146661. The reversal of 85146647 is 74664158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85146647 - 2⁴ = 85146631 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 (85146637) 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, 42573323 + 42573324.

It is an arithmetic number, because the mean of its divisors is an integer number (42573324).

Almost surely, 2^85146647 is an apocalyptic number.

85146647 is a deficient number, since it is larger than the sum of its proper divisors (1).

85146647 is an equidigital number, since it uses as much as digits as its factorization.

85146647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 85146647 is about 9227.4940801932. The cubic root of 85146647 is about 439.9356775808.

The spelling of 85146647 in words is "eighty-five million, one hundred forty-six thousand, six hundred forty-seven".