1001720579 has 2 divisors, whose sum is σ = 1001720580. Its totient is φ = 1001720578.

The previous prime is 1001720549. The next prime is 1001720591. The reversal of 1001720579 is 9750271001.

1001720579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001720579 - 2²⁴ = 984943363 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1001720509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500860289 + 500860290.

It is an arithmetic number, because the mean of its divisors is an integer number (500860290).

Almost surely, 2^1001720579 is an apocalyptic number.

1001720579 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001720579 is an equidigital number, since it uses as much as digits as its factorization.

1001720579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 1001720579 is about 31649.9696524341. The cubic root of 1001720579 is about 1000.5731977149.

The spelling of 1001720579 in words is "one billion, one million, seven hundred twenty thousand, five hundred seventy-nine".