4680721 has 4 divisors (see below), whose sum is σ = 4831744. Its totient is φ = 4529700.

The previous prime is 4680719. The next prime is 4680727. The reversal of 4680721 is 1270864.

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 4680721 - 2¹ = 4680719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4680721.

It is not an unprimeable number, because it can be changed into a prime (4680727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75465 + ... + 75526.

It is an arithmetic number, because the mean of its divisors is an integer number (1207936).

Almost surely, 2^4680721 is an apocalyptic number.

It is an amenable number.

4680721 is a deficient number, since it is larger than the sum of its proper divisors (151023).

4680721 is a wasteful number, since it uses less digits than its factorization.

4680721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151022.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4680721 is about 2163.4974000447. The cubic root of 4680721 is about 167.2775215140.

The spelling of 4680721 in words is "four million, six hundred eighty thousand, seven hundred twenty-one".