9720685 has 32 divisors (see below), whose sum is σ = 14031360. Its totient is φ = 6386688.

The previous prime is 9720673. The next prime is 9720727. The reversal of 9720685 is 5860279.

9720685 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9720685 - 2⁵ = 9720653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20764 + ... + 21226.

It is an arithmetic number, because the mean of its divisors is an integer number (438480).

Almost surely, 2^9720685 is an apocalyptic number.

9720685 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9720685 is a deficient number, since it is larger than the sum of its proper divisors (4310675).

9720685 is a wasteful number, since it uses less digits than its factorization.

9720685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 9720685 is about 3117.8013086148. The cubic root of 9720685 is about 213.4186114683.

The spelling of 9720685 in words is "nine million, seven hundred twenty thousand, six hundred eighty-five".