862686860 has 48 divisors (see below), whose sum is σ = 2077911360. Its totient is φ = 294712320.

The previous prime is 862686859. The next prime is 862686893. The reversal of 862686860 is 68686268.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 862686799 and 862686808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28376 + ... + 50304.

It is an arithmetic number, because the mean of its divisors is an integer number (43289820).

Almost surely, 2^862686860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862686860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038955680).

862686860 is an abundant number, since it is smaller than the sum of its proper divisors (1215224500).

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

862686860 is a wasteful number, since it uses less digits than its factorization.

862686860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22226 (or 22224 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 862686860 is about 29371.5314547948. The cubic root of 862686860 is about 951.9578680481.

The spelling of 862686860 in words is "eight hundred sixty-two million, six hundred eighty-six thousand, eight hundred sixty".