844648650 has 72 divisors (see below), whose sum is σ = 2273476140. Its totient is φ = 224824320.

The previous prime is 844648643. The next prime is 844648663. The reversal of 844648650 is 56846448.

844648650 is a `hidden beast` number, since 84 + 46 + 486 + 50 = 666.

844648650 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 6 ways, for example, as 285373449 + 559275201 = 16893^2 + 23649^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 844648596 and 844648605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 301456 + ... + 304244.

Almost surely, 2^844648650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844648650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136738070).

844648650 is an abundant number, since it is smaller than the sum of its proper divisors (1428827490).

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

844648650 is a wasteful number, since it uses less digits than its factorization.

844648650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480 (or 3472 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 844648650 is about 29062.8396754343. The cubic root of 844648650 is about 945.2761433687.

The spelling of 844648650 in words is "eight hundred forty-four million, six hundred forty-eight thousand, six hundred fifty".