85648021 has 8 divisors (see below), whose sum is σ = 89501760. Its totient is φ = 81805152.

The previous prime is 85648001. The next prime is 85648051. The reversal of 85648021 is 12084658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85648021 - 2⁹ = 85647509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85648001) 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 in 7 ways as a sum of consecutive naturals, for example, 16306 + ... + 20908.

It is an arithmetic number, because the mean of its divisors is an integer number (11187720).

Almost surely, 2^85648021 is an apocalyptic number.

It is an amenable number.

85648021 is a deficient number, since it is larger than the sum of its proper divisors (3853739).

85648021 is a wasteful number, since it uses less digits than its factorization.

85648021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5435.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85648021 is about 9254.6216022050. The cubic root of 85648021 is about 440.7974879304.

The spelling of 85648021 in words is "eighty-five million, six hundred forty-eight thousand, twenty-one".