844928660 has 12 divisors (see below), whose sum is σ = 1774350228. Its totient is φ = 337971456.

The previous prime is 844928641. The next prime is 844928663. The reversal of 844928660 is 66829448.

844928660 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 247810564 + 597118096 = 15742^2 + 24436^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844928663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21123197 + ... + 21123236.

It is an arithmetic number, because the mean of its divisors is an integer number (147862519).

Almost surely, 2^844928660 is an apocalyptic number.

It is an amenable number.

844928660 is an abundant number, since it is smaller than the sum of its proper divisors (929421568).

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

844928660 is a wasteful number, since it uses less digits than its factorization.

844928660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42246442 (or 42246440 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 844928660 is about 29067.6565962927. The cubic root of 844928660 is about 945.3805881891.

The spelling of 844928660 in words is "eight hundred forty-four million, nine hundred twenty-eight thousand, six hundred sixty".