6244660540 has 48 divisors (see below), whose sum is σ = 13743938880. Its totient is φ = 2378787840.

The previous prime is 6244660537. The next prime is 6244660561. The reversal of 6244660540 is 450664426.

It is a self number, because there is not a number n which added to its sum of digits gives 6244660540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75700 + ... + 134980.

It is an arithmetic number, because the mean of its divisors is an integer number (286332060).

Almost surely, 2^6244660540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6244660540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6871969440).

6244660540 is an abundant number, since it is smaller than the sum of its proper divisors (7499278340).

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

6244660540 is a wasteful number, since it uses less digits than its factorization.

6244660540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59542 (or 59540 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 6244660540 is about 79023.1645784956. The cubic root of 6244660540 is about 1841.4910468363.

The spelling of 6244660540 in words is "six billion, two hundred forty-four million, six hundred sixty thousand, five hundred forty".