870786685860 has 288 divisors, whose sum is σ = 3019428744192. Its totient is φ = 183600069120.

The previous prime is 870786685849. The next prime is 870786685861. The reversal of 870786685860 is 68586687078.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (870786685861) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 132516375 + ... + 132522945.

It is an arithmetic number, because the mean of its divisors is an integer number (10484127584).

Almost surely, 2^870786685860 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 870786685860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509714372096).

870786685860 is an abundant number, since it is smaller than the sum of its proper divisors (2148642058332).

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

870786685860 is a wasteful number, since it uses less digits than its factorization.

870786685860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8483 (or 8468 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 69.

The spelling of 870786685860 in words is "eight hundred seventy billion, seven hundred eighty-six million, six hundred eighty-five thousand, eight hundred sixty".