6647340 has 192 divisors, whose sum is σ = 24192000. Its totient is φ = 1354752.

The previous prime is 6647339. The next prime is 6647363. The reversal of 6647340 is 437466.

6647340 is digitally balanced in base 8, 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 (30).

6647340 is strictly pandigital in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 6647298 and 6647307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349851 + ... + 349869.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

Almost surely, 2^6647340 is an apocalyptic number.

6647340 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 6647340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12096000).

6647340 is an abundant number, since it is smaller than the sum of its proper divisors (17544660).

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

6647340 is a wasteful number, since it uses less digits than its factorization.

6647340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 6647340 is about 2578.2435881817. The cubic root of 6647340 is about 188.0251588482.

The spelling of 6647340 in words is "six million, six hundred forty-seven thousand, three hundred forty".