1722973 has 8 divisors (see below), whose sum is σ = 2011392. Its totient is φ = 1445136.

The previous prime is 1722937. The next prime is 1722983. The reversal of 1722973 is 3792271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1722973 - 2¹⁷ = 1591901 is a prime.

It is a d-powerful number, because it can be written as 1 + 7³ + 2¹¹ + 2¹¹ + 9⁴ + 7⁶ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722923) 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 in 7 ways as a sum of consecutive naturals, for example, 2290 + ... + 2947.

It is an arithmetic number, because the mean of its divisors is an integer number (251424).

2^1722973 is an apocalyptic number.

It is an amenable number.

1722973 is a deficient number, since it is larger than the sum of its proper divisors (288419).

1722973 is an equidigital number, since it uses as much as digits as its factorization.

1722973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291.

The product of its digits is 5292, while the sum is 31.

The square root of 1722973 is about 1312.6206611203. The cubic root of 1722973 is about 119.8835212350.

The spelling of 1722973 in words is "one million, seven hundred twenty-two thousand, nine hundred seventy-three".