6447020 has 12 divisors (see below), whose sum is σ = 13538784. Its totient is φ = 2578800.

The previous prime is 6447017. The next prime is 6447031. The reversal of 6447020 is 207446.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 161156 + ... + 161195.

It is an arithmetic number, because the mean of its divisors is an integer number (1128232).

Almost surely, 2^6447020 is an apocalyptic number.

It is an amenable number.

6447020 is an abundant number, since it is smaller than the sum of its proper divisors (7091764).

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

6447020 is a wasteful number, since it uses less digits than its factorization.

6447020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322360 (or 322358 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 6447020 is about 2539.0982651327. The cubic root of 6447020 is about 186.1171266754.

The spelling of 6447020 in words is "six million, four hundred forty-seven thousand, twenty".