9722765 has 16 divisors (see below), whose sum is σ = 12697776. Its totient is φ = 7104000.

The previous prime is 9722723. The next prime is 9722771. The reversal of 9722765 is 5672279.

9722765 = 111² + 112² + ... + 312².

9722765 is digitally balanced in base 2, 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 8 ways, for example, as 841 + 9721924 = 29^2 + 3118^2 .

It is not a de Polignac number, because 9722765 - 2¹² = 9718669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5825 + ... + 7305.

It is an arithmetic number, because the mean of its divisors is an integer number (793611).

Almost surely, 2^9722765 is an apocalyptic number.

It is an amenable number.

9722765 is a deficient number, since it is larger than the sum of its proper divisors (2975011).

9722765 is a wasteful number, since it uses less digits than its factorization.

9722765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its digits is 52920, while the sum is 38.

The square root of 9722765 is about 3118.1348591746. The cubic root of 9722765 is about 213.4338325854.

The spelling of 9722765 in words is "nine million, seven hundred twenty-two thousand, seven hundred sixty-five".