85336647 has 32 divisors (see below), whose sum is σ = 134023680. Its totient is φ = 47752320.

The previous prime is 85336637. The next prime is 85336649. The reversal of 85336647 is 74663358.

It is not a de Polignac number, because 85336647 - 2¹² = 85332551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85336599 and 85336608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85336649) 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 in 31 ways as a sum of consecutive naturals, for example, 20073 + ... + 23949.

It is an arithmetic number, because the mean of its divisors is an integer number (4188240).

Almost surely, 2^85336647 is an apocalyptic number.

85336647 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

85336647 is a deficient number, since it is larger than the sum of its proper divisors (48687033).

85336647 is a wasteful number, since it uses less digits than its factorization.

85336647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943.

The product of its digits is 362880, while the sum is 42.

The square root of 85336647 is about 9237.7836627624. The cubic root of 85336647 is about 440.2626651363.

Subtracting from 85336647 its reverse (74663358), we obtain a square (10673289 = 3267²).

The spelling of 85336647 in words is "eighty-five million, three hundred thirty-six thousand, six hundred forty-seven".