8601649244 has 48 divisors (see below), whose sum is σ = 15489801600. Its totient is φ = 4178304000.

The previous prime is 8601649187. The next prime is 8601649247. The reversal of 8601649244 is 4429461068.

It is a junction number, because it is equal to n+sod(n) for n = 8601649195 and 8601649204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8601649247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5776052 + ... + 5777540.

It is an arithmetic number, because the mean of its divisors is an integer number (322704200).

Almost surely, 2^8601649244 is an apocalyptic number.

It is an amenable number.

8601649244 is a deficient number, since it is larger than the sum of its proper divisors (6888152356).

8601649244 is a wasteful number, since it uses less digits than its factorization.

8601649244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854 (or 1852 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 8601649244 is about 92745.0766563918. The cubic root of 8601649244 is about 2048.9305739949.

The spelling of 8601649244 in words is "eight billion, six hundred one million, six hundred forty-nine thousand, two hundred forty-four".