860386560 has 144 divisors (see below), whose sum is σ = 2997812160. Its totient is φ = 208568320.

The previous prime is 860386511. The next prime is 860386601. The reversal of 860386560 is 65683068.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32056 + ... + 52424.

It is an arithmetic number, because the mean of its divisors is an integer number (20818140).

Almost surely, 2^860386560 is an apocalyptic number.

860386560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860386560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498906080).

860386560 is an abundant number, since it is smaller than the sum of its proper divisors (2137425600).

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

860386560 is a wasteful number, since it uses less digits than its factorization.

860386560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20404 (or 20390 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 860386560 is about 29332.3466500722. The cubic root of 860386560 is about 951.1110030635. Note that the first 3 decimals are identical.

The spelling of 860386560 in words is "eight hundred sixty million, three hundred eighty-six thousand, five hundred sixty".