870786687078 has 96 divisors (see below), whose sum is σ = 2352468448512. Its totient is φ = 226157832000.

The previous prime is 870786687047. The next prime is 870786687091.

870786687078 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 870786686997 and 870786687015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20662228 + ... + 20704328.

It is an arithmetic number, because the mean of its divisors is an integer number (24504879672).

Almost surely, 2^870786687078 is an apocalyptic number.

870786687078 is an abundant number, since it is smaller than the sum of its proper divisors (1481681761434).

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

870786687078 is a wasteful number, since it uses less digits than its factorization.

870786687078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57050 (or 57047 counting only the distinct ones).

The product of its (nonzero) digits is 354041856, while the sum is 72.

The spelling of 870786687078 in words is "eight hundred seventy billion, seven hundred eighty-six million, six hundred eighty-seven thousand, seventy-eight".