6371988 has 48 divisors (see below), whose sum is σ = 17547264. Its totient is φ = 1761120.

The previous prime is 6371987. The next prime is 6372001. The reversal of 6371988 is 8891736.

6371988 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6371983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1381 + ... + 3827.

It is an arithmetic number, because the mean of its divisors is an integer number (365568).

Almost surely, 2^6371988 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 6371988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8773632).

6371988 is an abundant number, since it is smaller than the sum of its proper divisors (11175276).

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

6371988 is a wasteful number, since it uses less digits than its factorization.

6371988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2490 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 6371988 is about 2524.2796992410. The cubic root of 6371988 is about 185.3922817965.

The spelling of 6371988 in words is "six million, three hundred seventy-one thousand, nine hundred eighty-eight".