6644474 has 4 divisors (see below), whose sum is σ = 9966714. Its totient is φ = 3322236.

The previous prime is 6644459. The next prime is 6644483. The reversal of 6644474 is 4744466.

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

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 1423249 = 2285^2 + 1193^2 .

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 as a sum of consecutive naturals, namely, 1661117 + ... + 1661120.

Almost surely, 2^6644474 is an apocalyptic number.

6644474 is a deficient number, since it is larger than the sum of its proper divisors (3322240).

6644474 is a wasteful number, since it uses less digits than its factorization.

6644474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322239.

The product of its digits is 64512, while the sum is 35.

The square root of 6644474 is about 2577.6877235228. The cubic root of 6644474 is about 187.9981326207.

The spelling of 6644474 in words is "six million, six hundred forty-four thousand, four hundred seventy-four".