4816721 has 16 divisors (see below), whose sum is σ = 6077568. Its totient is φ = 3715200.

The previous prime is 4816717. The next prime is 4816727. The reversal of 4816721 is 1276184.

It is a cyclic number.

It is not a de Polignac number, because 4816721 - 2² = 4816717 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4816727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3086 + ... + 4376.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^4816721 is an apocalyptic number.

4816721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4816721 is a deficient number, since it is larger than the sum of its proper divisors (1260847).

4816721 is a wasteful number, since it uses less digits than its factorization.

4816721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 2688, while the sum is 29.

The square root of 4816721 is about 2194.7029411745. The cubic root of 4816721 is about 168.8821815748.

The spelling of 4816721 in words is "four million, eight hundred sixteen thousand, seven hundred twenty-one".