4533681 has 4 divisors (see below), whose sum is σ = 6044912. Its totient is φ = 3022452.

The previous prime is 4533677. The next prime is 4533701. The reversal of 4533681 is 1863354.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4533681 - 2² = 4533677 is a prime.

It is a super-2 number, since 2×4533681² = 41108526819522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4533601) 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 3 ways as a sum of consecutive naturals, for example, 755611 + ... + 755616.

It is an arithmetic number, because the mean of its divisors is an integer number (1511228).

Almost surely, 2^4533681 is an apocalyptic number.

It is an amenable number.

4533681 is a deficient number, since it is larger than the sum of its proper divisors (1511231).

4533681 is a wasteful number, since it uses less digits than its factorization.

4533681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511230.

The product of its digits is 8640, while the sum is 30.

The square root of 4533681 is about 2129.2442321162. The cubic root of 4533681 is about 165.5072361394.

The spelling of 4533681 in words is "four million, five hundred thirty-three thousand, six hundred eighty-one".