846865540 has 48 divisors (see below), whose sum is σ = 1947985200. Its totient is φ = 307822592.

The previous prime is 846865529. The next prime is 846865559. The reversal of 846865540 is 45568648.

It can be written as a sum of positive squares in 8 ways, for example, as 126157824 + 720707716 = 11232^2 + 26846^2 .

It is a zygodrome in base 6.

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, 33085 + ... + 52804.

It is an arithmetic number, because the mean of its divisors is an integer number (40583025).

Almost surely, 2^846865540 is an apocalyptic number.

It is an amenable number.

846865540 is an abundant number, since it is smaller than the sum of its proper divisors (1101119660).

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

846865540 is a wasteful number, since it uses less digits than its factorization.

846865540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85944 (or 85942 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 846865540 is about 29100.9542798857. The cubic root of 846865540 is about 946.1024208709.

The spelling of 846865540 in words is "eight hundred forty-six million, eight hundred sixty-five thousand, five hundred forty".