4568649 has 16 divisors (see below), whose sum is σ = 6347520. Its totient is φ = 2920320.

The previous prime is 4568647. The next prime is 4568657. The reversal of 4568649 is 9468654.

It is not a de Polignac number, because 4568649 - 2¹ = 4568647 is a prime.

Its product of digits (207360) is a multiple of the sum of its prime divisors (640).

4568649 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4568649.

It is not an unprimeable number, because it can be changed into a prime (4568647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8509 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (396720).

Almost surely, 2^4568649 is an apocalyptic number.

It is an amenable number.

4568649 is a deficient number, since it is larger than the sum of its proper divisors (1778871).

4568649 is a wasteful number, since it uses less digits than its factorization.

4568649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 207360, while the sum is 42.

The square root of 4568649 is about 2137.4398237143. The cubic root of 4568649 is about 165.9316624891.

The spelling of 4568649 in words is "four million, five hundred sixty-eight thousand, six hundred forty-nine".