6641340 has 48 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 1744960.

The previous prime is 6641333. The next prime is 6641351. The reversal of 6641340 is 431466.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6641340.

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 15 ways as a sum of consecutive naturals, for example, 3481 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^6641340 is an apocalyptic number.

6641340 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 6641340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9434880).

6641340 is an abundant number, since it is smaller than the sum of its proper divisors (12228420).

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

6641340 is a wasteful number, since it uses less digits than its factorization.

6641340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6641340 is about 2577.0797426545. The cubic root of 6641340 is about 187.9685702703.

The spelling of 6641340 in words is "six million, six hundred forty-one thousand, three hundred forty".