6437283840 has 576 divisors, whose sum is σ = 25041744000. Its totient is φ = 1576599552.

The previous prime is 6437283833. The next prime is 6437283851. The reversal of 6437283840 is 483827346.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32348061 + ... + 32348259.

It is an arithmetic number, because the mean of its divisors is an integer number (43475250).

Almost surely, 2^6437283840 is an apocalyptic number.

6437283840 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 6437283840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12520872000).

6437283840 is an abundant number, since it is smaller than the sum of its proper divisors (18604460160).

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

6437283840 is a wasteful number, since it uses less digits than its factorization.

6437283840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 6437283840 is about 80232.6856087966. The cubic root of 6437283840 is about 1860.2338935837.

The spelling of 6437283840 in words is "six billion, four hundred thirty-seven million, two hundred eighty-three thousand, eight hundred forty".