4457644 has 12 divisors (see below), whose sum is σ = 7917784. Its totient is φ = 2195424.

The previous prime is 4457639. The next prime is 4457657. The reversal of 4457644 is 4467544.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 4 + 4⁵ + 5³ + 7 + 6² + 4⁹ + 4¹¹ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8049 + ... + 8584.

Almost surely, 2^4457644 is an apocalyptic number.

It is an amenable number.

4457644 is a deficient number, since it is larger than the sum of its proper divisors (3460140).

4457644 is a wasteful number, since it uses less digits than its factorization.

4457644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16704 (or 16702 counting only the distinct ones).

The product of its digits is 53760, while the sum is 34.

The square root of 4457644 is about 2111.3133353437. The cubic root of 4457644 is about 164.5767419390.

The spelling of 4457644 in words is "four million, four hundred fifty-seven thousand, six hundred forty-four".