4575649 has 16 divisors (see below), whose sum is σ = 5216400. Its totient is φ = 3983616.

The previous prime is 4575647. The next prime is 4575653. The reversal of 4575649 is 9465754.

4575649 = 153² + 154² + ... + 258².

It can be written as a sum of positive squares in 8 ways, for example, as 165649 + 4410000 = 407^2 + 2100^2 .

It is not a de Polignac number, because 4575649 - 2¹ = 4575647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4575647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19867 + ... + 20095.

It is an arithmetic number, because the mean of its divisors is an integer number (326025).

Almost surely, 2^4575649 is an apocalyptic number.

It is an amenable number.

4575649 is a deficient number, since it is larger than the sum of its proper divisors (640751).

4575649 is a wasteful number, since it uses less digits than its factorization.

4575649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324.

The product of its digits is 151200, while the sum is 40.

The square root of 4575649 is about 2139.0766699677. The cubic root of 4575649 is about 166.0163650581.

The spelling of 4575649 in words is "four million, five hundred seventy-five thousand, six hundred forty-nine".