8731073 has 8 divisors (see below), whose sum is σ = 9632616. Its totient is φ = 7862400.

The previous prime is 8731069. The next prime is 8731097. The reversal of 8731073 is 3701378.

8731073 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1803649 + 6927424 = 1343^2 + 2632^2 .

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

It is not a de Polignac number, because 8731073 - 2² = 8731069 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 (8731673) 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, 7658 + ... + 8723.

It is an arithmetic number, because the mean of its divisors is an integer number (1204077).

Almost surely, 2^8731073 is an apocalyptic number.

It is an amenable number.

8731073 is a deficient number, since it is larger than the sum of its proper divisors (901543).

8731073 is a wasteful number, since it uses less digits than its factorization.

8731073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16435.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 8731073 is about 2954.8389126990. The cubic root of 8731073 is about 205.9155795098.

The spelling of 8731073 in words is "eight million, seven hundred thirty-one thousand, seventy-three".