4523643 has 12 divisors (see below), whose sum is σ = 6686680. Its totient is φ = 2945376.

The previous prime is 4523633. The next prime is 4523647. The reversal of 4523643 is 3463254.

It is not a de Polignac number, because 4523643 - 2⁶ = 4523579 is a prime.

It is a d-powerful number, because it can be written as 4² + 5³ + 2¹⁷ + 3⁹ + 6⁴ + 4¹¹ + 3¹¹ .

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5458 + ... + 6231.

Almost surely, 2^4523643 is an apocalyptic number.

4523643 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4523643 is a deficient number, since it is larger than the sum of its proper divisors (2163037).

4523643 is a wasteful number, since it uses less digits than its factorization.

4523643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11738 (or 11735 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 4523643 is about 2126.8857515156. The cubic root of 4523643 is about 165.3849963020.

Adding to 4523643 its reverse (3463254), we get a palindrome (7986897).

It can be divided in two parts, 452 and 3643, that added together give a triangular number (4095 = T₉₀).

The spelling of 4523643 in words is "four million, five hundred twenty-three thousand, six hundred forty-three".