1000720573 has 8 divisors (see below), whose sum is σ = 1016582400. Its totient is φ = 984917088.

The previous prime is 1000720549. The next prime is 1000720597. The reversal of 1000720573 is 3750270001.

It is an interprime number because it is at equal distance from previous prime (1000720549) and next prime (1000720597).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000720573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000720073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20658 + ... + 49276.

It is an arithmetic number, because the mean of its divisors is an integer number (127072800).

Almost surely, 2^1000720573 is an apocalyptic number.

It is an amenable number.

1000720573 is a deficient number, since it is larger than the sum of its proper divisors (15861827).

1000720573 is an equidigital number, since it uses as much as digits as its factorization.

1000720573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29171.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 1000720573 is about 31634.1678095062. The cubic root of 1000720573 is about 1000.2401333314.

Adding to 1000720573 its reverse (3750270001), we get a palindrome (4750990574).

The spelling of 1000720573 in words is "one billion, seven hundred twenty thousand, five hundred seventy-three".