6244262640 has 960 divisors, whose sum is σ = 28078202880. Its totient is φ = 1205360640.

The previous prime is 6244262603. The next prime is 6244262653. The reversal of 6244262640 is 462624426.

6244262640 is a `hidden beast` number, since 6 + 2 + 4 + 4 + 2 + 6 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6244262595 and 6244262604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 75232039 + ... + 75232121.

It is an arithmetic number, because the mean of its divisors is an integer number (29248128).

Almost surely, 2^6244262640 is an apocalyptic number.

6244262640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6244262640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14039101440).

6244262640 is an abundant number, since it is smaller than the sum of its proper divisors (21833940240).

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

6244262640 is a wasteful number, since it uses less digits than its factorization.

6244262640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The square root of 6244262640 is about 79020.6469221810. The cubic root of 6244262640 is about 1841.4519336960.

The spelling of 6244262640 in words is "six billion, two hundred forty-four million, two hundred sixty-two thousand, six hundred forty".