85057647 has 16 divisors (see below), whose sum is σ = 120412512. Its totient is φ = 53222400.

The previous prime is 85057601. The next prime is 85057663. The reversal of 85057647 is 74675058.

It is not a de Polignac number, because 85057647 - 2⁸ = 85057391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85057599 and 85057608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85052647) 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 15 ways as a sum of consecutive naturals, for example, 18147 + ... + 22347.

It is an arithmetic number, because the mean of its divisors is an integer number (7525782).

Almost surely, 2^85057647 is an apocalyptic number.

85057647 is a deficient number, since it is larger than the sum of its proper divisors (35354865).

85057647 is a wasteful number, since it uses less digits than its factorization.

85057647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618.

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 85057647 is about 9222.6702749258. The cubic root of 85057647 is about 439.7823424166.

The spelling of 85057647 in words is "eighty-five million, fifty-seven thousand, six hundred forty-seven".