6447001 has 6 divisors (see below), whose sum is σ = 7086506. Its totient is φ = 5860800.

The previous prime is 6446987. The next prime is 6447017. The reversal of 6447001 is 1007446.

It can be written as a sum of positive squares in only one way, i.e., 5593225 + 853776 = 2365^2 + 924^2 .

It is not a de Polignac number, because 6447001 - 2¹¹ = 6444953 is a prime.

It is a super-3 number, since 3×6447001³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6447031) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26520 + ... + 26761.

Almost surely, 2^6447001 is an apocalyptic number.

It is an amenable number.

6447001 is a deficient number, since it is larger than the sum of its proper divisors (639505).

6447001 is a wasteful number, since it uses less digits than its factorization.

6447001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53303 (or 53292 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 6447001 is about 2539.0945236442. The cubic root of 6447001 is about 186.1169438400.

The spelling of 6447001 in words is "six million, four hundred forty-seven thousand, one".