6445801 has 4 divisors (see below), whose sum is σ = 6668100. Its totient is φ = 6223504.

The previous prime is 6445793. The next prime is 6445811. The reversal of 6445801 is 1085446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1085446 = 2 ⋅542723.

It can be written as a sum of positive squares in 2 ways, for example, as 5180176 + 1265625 = 2276^2 + 1125^2 .

It is a cyclic number.

It is not a de Polignac number, because 6445801 - 2³ = 6445793 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6445801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445811) 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, 111106 + ... + 111163.

It is an arithmetic number, because the mean of its divisors is an integer number (1667025).

Almost surely, 2^6445801 is an apocalyptic number.

It is an amenable number.

6445801 is a deficient number, since it is larger than the sum of its proper divisors (222299).

6445801 is a wasteful number, since it uses less digits than its factorization.

6445801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222298.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 6445801 is about 2538.8582079352. The cubic root of 6445801 is about 186.1053956183.

The spelling of 6445801 in words is "six million, four hundred forty-five thousand, eight hundred one".