4870721 has 4 divisors (see below), whose sum is σ = 5157252. Its totient is φ = 4584192.

The previous prime is 4870709. The next prime is 4870729. The reversal of 4870721 is 1270784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 3010225 = 1364^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 4870721 - 2¹⁴ = 4854337 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4870729) 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, 143240 + ... + 143273.

It is an arithmetic number, because the mean of its divisors is an integer number (1289313).

Almost surely, 2^4870721 is an apocalyptic number.

It is an amenable number.

4870721 is a deficient number, since it is larger than the sum of its proper divisors (286531).

4870721 is a wasteful number, since it uses less digits than its factorization.

4870721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286530.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 4870721 is about 2206.9710011688. The cubic root of 4870721 is about 169.5109473935.

The spelling of 4870721 in words is "four million, eight hundred seventy thousand, seven hundred twenty-one".