6445574 has 4 divisors (see below), whose sum is σ = 9668364. Its totient is φ = 3222786.

The previous prime is 6445559. The next prime is 6445577. The reversal of 6445574 is 4755446.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611392 + ... + 1611395.

It is an arithmetic number, because the mean of its divisors is an integer number (2417091).

Almost surely, 2^6445574 is an apocalyptic number.

6445574 is a deficient number, since it is larger than the sum of its proper divisors (3222790).

6445574 is a wasteful number, since it uses less digits than its factorization.

6445574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222789.

The product of its digits is 67200, while the sum is 35.

The square root of 6445574 is about 2538.8135024062. The cubic root of 6445574 is about 186.1032109185.

The spelling of 6445574 in words is "six million, four hundred forty-five thousand, five hundred seventy-four".