865728573 has 8 divisors (see below), whose sum is σ = 1156620000. Its totient is φ = 575994768.

The previous prime is 865728551. The next prime is 865728583. The reversal of 865728573 is 375827568.

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

It is not a de Polignac number, because 865728573 - 2¹² = 865724477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865728583) 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, 287658 + ... + 290651.

It is an arithmetic number, because the mean of its divisors is an integer number (144577500).

Almost surely, 2^865728573 is an apocalyptic number.

It is an amenable number.

865728573 is a deficient number, since it is larger than the sum of its proper divisors (290891427).

865728573 is a wasteful number, since it uses less digits than its factorization.

865728573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578811.

The product of its digits is 2822400, while the sum is 51.

The square root of 865728573 is about 29423.2658452457. The cubic root of 865728573 is about 953.0753790353.

The spelling of 865728573 in words is "eight hundred sixty-five million, seven hundred twenty-eight thousand, five hundred seventy-three".