4523649 has 16 divisors (see below), whose sum is σ = 6878592. Its totient is φ = 2619648.

The previous prime is 4523647. The next prime is 4523669. The reversal of 4523649 is 9463254.

4523649 = T₇₂₁ + T₇₂₂ + ... + T₇₃₇.

It is not a de Polignac number, because 4523649 - 2¹ = 4523647 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 5 + 2¹⁵ + 3⁵ + 6⁷ + 4¹¹ + 9 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4523647) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2749 + ... + 4074.

It is an arithmetic number, because the mean of its divisors is an integer number (429912).

Almost surely, 2^4523649 is an apocalyptic number.

It is an amenable number.

4523649 is a deficient number, since it is larger than the sum of its proper divisors (2354943).

4523649 is a wasteful number, since it uses less digits than its factorization.

4523649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856.

The product of its digits is 25920, while the sum is 33.

The square root of 4523649 is about 2126.8871620281. The cubic root of 4523649 is about 165.3850694223.

The spelling of 4523649 in words is "four million, five hundred twenty-three thousand, six hundred forty-nine".