9720973 has 8 divisors (see below), whose sum is σ = 10418688. Its totient is φ = 9046224.

The previous prime is 9720959. The next prime is 9721013. The reversal of 9720973 is 3790279.

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-9720973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9720673) 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, 4861 + ... + 6562.

It is an arithmetic number, because the mean of its divisors is an integer number (1302336).

Almost surely, 2^9720973 is an apocalyptic number.

It is an amenable number.

9720973 is a deficient number, since it is larger than the sum of its proper divisors (697715).

9720973 is a wasteful number, since it uses less digits than its factorization.

9720973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 9720973 is about 3117.8474946668. The cubic root of 9720973 is about 213.4207191371.

The spelling of 9720973 in words is "nine million, seven hundred twenty thousand, nine hundred seventy-three".