8720793 has 12 divisors (see below), whose sum is σ = 13031460. Its totient is φ = 5613216.

The previous prime is 8720783. The next prime is 8720797. The reversal of 8720793 is 3970278.

It can be written as a sum of positive squares in 2 ways, for example, as 6906384 + 1814409 = 2628^2 + 1347^2 .

It is not a de Polignac number, because 8720793 - 2⁶ = 8720729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8720797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16446 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (1085955).

Almost surely, 2^8720793 is an apocalyptic number.

It is an amenable number.

8720793 is a deficient number, since it is larger than the sum of its proper divisors (4310667).

8720793 is a wasteful number, since it uses less digits than its factorization.

8720793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33448 (or 33445 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 8720793 is about 2953.0988808369. The cubic root of 8720793 is about 205.8347324981.

It can be divided in two parts, 8 and 720793, that added together give a square (720801 = 849²).

The spelling of 8720793 in words is "eight million, seven hundred twenty thousand, seven hundred ninety-three".