9720711 has 72 divisors (see below), whose sum is σ = 19184256. Its totient is φ = 4605120.

The previous prime is 9720673. The next prime is 9720727. The reversal of 9720711 is 1170279.

It is not a de Polignac number, because 9720711 - 2¹³ = 9712519 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9720791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 117076 + ... + 117158.

It is an arithmetic number, because the mean of its divisors is an integer number (266448).

Almost surely, 2^9720711 is an apocalyptic number.

9720711 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9720711 is a deficient number, since it is larger than the sum of its proper divisors (9463545).

9720711 is a wasteful number, since it uses less digits than its factorization.

9720711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 9720711 is about 3117.8054782170. The cubic root of 9720711 is about 213.4188017457.

The spelling of 9720711 in words is "nine million, seven hundred twenty thousand, seven hundred eleven".