4560721 has 4 divisors (see below), whose sum is σ = 4975344. Its totient is φ = 4146100.

The previous prime is 4560719. The next prime is 4560727. The reversal of 4560721 is 1270654.

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 a cyclic number.

It is not a de Polignac number, because 4560721 - 2¹ = 4560719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4560727) 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, 207295 + ... + 207316.

It is an arithmetic number, because the mean of its divisors is an integer number (1243836).

Almost surely, 2^4560721 is an apocalyptic number.

It is an amenable number.

4560721 is a deficient number, since it is larger than the sum of its proper divisors (414623).

4560721 is a wasteful number, since it uses less digits than its factorization.

4560721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414622.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 4560721 is about 2135.5844633261. The cubic root of 4560721 is about 165.8356262291.

The spelling of 4560721 in words is "four million, five hundred sixty thousand, seven hundred twenty-one".