6371840 has 80 divisors (see below), whose sum is σ = 16204320. Its totient is φ = 2396160.

The previous prime is 6371809. The next prime is 6371843. The reversal of 6371840 is 481736.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (6371843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48575 + ... + 48705.

It is an arithmetic number, because the mean of its divisors is an integer number (202554).

Almost surely, 2^6371840 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 6371840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8102160).

6371840 is an abundant number, since it is smaller than the sum of its proper divisors (9832480).

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

6371840 is a wasteful number, since it uses less digits than its factorization.

6371840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6371840 is about 2524.2503837773. The cubic root of 6371840 is about 185.3908464375.

The spelling of 6371840 in words is "six million, three hundred seventy-one thousand, eight hundred forty".