6243644240 has 40 divisors (see below), whose sum is σ = 14733149280. Its totient is φ = 2460180096.

The previous prime is 6243644237. The next prime is 6243644243. The reversal of 6243644240 is 424463426.

It is an interprime number because it is at equal distance from previous prime (6243644237) and next prime (6243644243).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 6243644240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6243644243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577070 + ... + 587789.

It is an arithmetic number, because the mean of its divisors is an integer number (368328732).

Almost surely, 2^6243644240 is an apocalyptic number.

It is an amenable number.

6243644240 is an abundant number, since it is smaller than the sum of its proper divisors (8489505040).

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

6243644240 is a wasteful number, since it uses less digits than its factorization.

6243644240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164939 (or 1164933 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 35.

The square root of 6243644240 is about 79016.7339238974. The cubic root of 6243644240 is about 1841.3911423459.

The spelling of 6243644240 in words is "six billion, two hundred forty-three million, six hundred forty-four thousand, two hundred forty".