85601720 has 32 divisors (see below), whose sum is σ = 197812800. Its totient is φ = 33314688.

The previous prime is 85601717. The next prime is 85601723. The reversal of 85601720 is 2710658.

It is an interprime number because it is at equal distance from previous prime (85601717) and next prime (85601723).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85601723) 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, 27440 + ... + 30399.

It is an arithmetic number, because the mean of its divisors is an integer number (6181650).

Almost surely, 2^85601720 is an apocalyptic number.

It is an amenable number.

85601720 is an abundant number, since it is smaller than the sum of its proper divisors (112211080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85601720 is a wasteful number, since it uses less digits than its factorization.

85601720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57887 (or 57883 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 85601720 is about 9252.1197571151. The cubic root of 85601720 is about 440.7180424546.

The spelling of 85601720 in words is "eighty-five million, six hundred one thousand, seven hundred twenty".