579721 has 2 divisors, whose sum is σ = 579722. Its totient is φ = 579720.

The previous prime is 579713. The next prime is 579737. The reversal of 579721 is 127975.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 541696 + 38025 = 736^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 579721 - 2³ = 579713 is a prime.

It is not a weakly prime, because it can be changed into another prime (579701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289860 + 289861.

It is an arithmetic number, because the mean of its divisors is an integer number (289861).

2⁵⁷⁹⁷²¹ is an apocalyptic number.

It is an amenable number.

579721 is a deficient number, since it is larger than the sum of its proper divisors (1).

579721 is an equidigital number, since it uses as much as digits as its factorization.

579721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 31.

The square root of 579721 is about 761.3941160792. The cubic root of 579721 is about 83.3821349708.

The spelling of 579721 in words is "five hundred seventy-nine thousand, seven hundred twenty-one".