5649645 has 16 divisors (see below), whose sum is σ = 9100800. Its totient is φ = 2992704.

The previous prime is 5649619. The next prime is 5649647. The reversal of 5649645 is 5469465.

It is not a de Polignac number, because 5649645 - 2¹³ = 5641453 is a prime.

It is a super-3 number, since 3×5649645³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649647) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 1156 + ... + 3554.

It is an arithmetic number, because the mean of its divisors is an integer number (568800).

Almost surely, 2^5649645 is an apocalyptic number.

It is an amenable number.

5649645 is a deficient number, since it is larger than the sum of its proper divisors (3451155).

5649645 is a wasteful number, since it uses less digits than its factorization.

5649645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564.

The product of its digits is 129600, while the sum is 39.

The square root of 5649645 is about 2376.8981888167. The cubic root of 5649645 is about 178.1040190739.

The spelling of 5649645 in words is "five million, six hundred forty-nine thousand, six hundred forty-five".