844352685 has 96 divisors (see below), whose sum is σ = 1779822720. Its totient is φ = 364953600.

The previous prime is 844352681. The next prime is 844352737. The reversal of 844352685 is 586253448.

844352685 is a `hidden beast` number, since 8 + 4 + 43 + 526 + 85 = 666.

It is not a de Polignac number, because 844352685 - 2² = 844352681 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 844352685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844352681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 157245 + ... + 162525.

It is an arithmetic number, because the mean of its divisors is an integer number (18539820).

Almost surely, 2^844352685 is an apocalyptic number.

844352685 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

844352685 is an abundant number, since it is smaller than the sum of its proper divisors (935470035).

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

844352685 is a wasteful number, since it uses less digits than its factorization.

844352685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339 (or 5336 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 844352685 is about 29057.7474178574. The cubic root of 844352685 is about 945.1657221748.

The spelling of 844352685 in words is "eight hundred forty-four million, three hundred fifty-two thousand, six hundred eighty-five".