1722073 has 2 divisors, whose sum is σ = 1722074. Its totient is φ = 1722072.

The previous prime is 1722067. The next prime is 1722089. The reversal of 1722073 is 3702271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 729 = 1312^2 + 27^2 .

It is an emirp because it is prime and its reverse (3702271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1722073 - 2¹⁷ = 1591001 is a prime.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (1722013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861036 + 861037.

It is an arithmetic number, because the mean of its divisors is an integer number (861037).

2^1722073 is an apocalyptic number.

It is an amenable number.

1722073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722073 is an equidigital number, since it uses as much as digits as its factorization.

1722073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 1722073 is about 1312.2777907135. The cubic root of 1722073 is about 119.8626437631.

The spelling of 1722073 in words is "one million, seven hundred twenty-two thousand, seventy-three".