488721 has 4 divisors (see below), whose sum is σ = 651632. Its totient is φ = 325812.

The previous prime is 488717. The next prime is 488723. The reversal of 488721 is 127884.

Added to its reverse (127884) it gives a triangular number (616605 = T₁₁₁₀).

488721 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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 488721 - 2² = 488717 is a prime.

It is a D-number.

It is a Duffinian number.

488721 is strictly pandigital in base 7.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 488721.

It is not an unprimeable number, because it can be changed into a prime (488723) 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, 81451 + ... + 81456.

It is an arithmetic number, because the mean of its divisors is an integer number (162908).

2⁴⁸⁸⁷²¹ is an apocalyptic number.

It is an amenable number.

488721 is a deficient number, since it is larger than the sum of its proper divisors (162911).

488721 is a wasteful number, since it uses less digits than its factorization.

488721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162910.

The product of its digits is 3584, while the sum is 30.

The square root of 488721 is about 699.0858316401. The cubic root of 488721 is about 78.7686980040.

Adding to 488721 its reverse (127884), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 488721 in words is "four hundred eighty-eight thousand, seven hundred twenty-one".