6631380 has 144 divisors (see below), whose sum is σ = 24286080. Its totient is φ = 1430784.

The previous prime is 6631379. The next prime is 6631409. The reversal of 6631380 is 831366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23802 + ... + 24078.

Almost surely, 2^6631380 is an apocalyptic number.

6631380 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 6631380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12143040).

6631380 is an abundant number, since it is smaller than the sum of its proper divisors (17654700).

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

6631380 is a wasteful number, since it uses less digits than its factorization.

6631380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6631380 is about 2575.1465977688. The cubic root of 6631380 is about 187.8745579356.

The spelling of 6631380 in words is "six million, six hundred thirty-one thousand, three hundred eighty".