85422647 has 4 divisors (see below), whose sum is σ = 85526520. Its totient is φ = 85318776.

The previous prime is 85422643. The next prime is 85422653. The reversal of 85422647 is 74622458.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85422647 - 2² = 85422643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85422647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85422643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50693 + ... + 52350.

It is an arithmetic number, because the mean of its divisors is an integer number (21381630).

Almost surely, 2^85422647 is an apocalyptic number.

85422647 is a deficient number, since it is larger than the sum of its proper divisors (103873).

85422647 is a wasteful number, since it uses less digits than its factorization.

85422647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103872.

The product of its digits is 107520, while the sum is 38.

The square root of 85422647 is about 9242.4372867767. The cubic root of 85422647 is about 440.4105104785.

The spelling of 85422647 in words is "eighty-five million, four hundred twenty-two thousand, six hundred forty-seven".