6447340 has 24 divisors (see below), whose sum is σ = 13587840. Its totient is φ = 2569728.

The previous prime is 6447323. The next prime is 6447391. The reversal of 6447340 is 437446.

It is a junction number, because it is equal to n+sod(n) for n = 6447299 and 6447308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9244 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (566160).

Almost surely, 2^6447340 is an apocalyptic number.

It is an amenable number.

6447340 is an abundant number, since it is smaller than the sum of its proper divisors (7140500).

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

6447340 is a wasteful number, since it uses less digits than its factorization.

6447340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 6447340 is about 2539.1612788478. The cubic root of 6447340 is about 186.1202059531.

The spelling of 6447340 in words is "six million, four hundred forty-seven thousand, three hundred forty".