856703860 has 12 divisors (see below), whose sum is σ = 1799078148. Its totient is φ = 342681536.

The previous prime is 856703857. The next prime is 856703891. The reversal of 856703860 is 68307658.

It can be written as a sum of positive squares in 2 ways, for example, as 187032976 + 669670884 = 13676^2 + 25878^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21417577 + ... + 21417616.

It is an arithmetic number, because the mean of its divisors is an integer number (149923179).

Almost surely, 2^856703860 is an apocalyptic number.

It is an amenable number.

856703860 is an abundant number, since it is smaller than the sum of its proper divisors (942374288).

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

856703860 is a wasteful number, since it uses less digits than its factorization.

856703860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42835202 (or 42835200 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 856703860 is about 29269.5039247337. The cubic root of 856703860 is about 949.7520534827.

The spelling of 856703860 in words is "eight hundred fifty-six million, seven hundred three thousand, eight hundred sixty".