6445001 has 4 divisors (see below), whose sum is σ = 6452100. Its totient is φ = 6437904.

The previous prime is 6444979. The next prime is 6445003. The reversal of 6445001 is 1005446.

It is a happy number.

6445001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4752400 + 1692601 = 2180^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445001 - 2⁶ = 6444937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6445003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1946 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (1613025).

Almost surely, 2^6445001 is an apocalyptic number.

It is an amenable number.

6445001 is a deficient number, since it is larger than the sum of its proper divisors (7099).

6445001 is a wasteful number, since it uses less digits than its factorization.

6445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 6445001 is about 2538.7006519084. The cubic root of 6445001 is about 186.0976960075.

The spelling of 6445001 in words is "six million, four hundred forty-five thousand, one".