9766729 has 6 divisors (see below), whose sum is σ = 11361354. Its totient is φ = 8371440.

The previous prime is 9766711. The next prime is 9766739. The reversal of 9766729 is 9276679.

It can be written as a sum of positive squares in only one way, i.e., 9703225 + 63504 = 3115^2 + 252^2 .

It is not a de Polignac number, because 9766729 - 2¹³ = 9758537 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9766739) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99612 + ... + 99709.

It is an arithmetic number, because the mean of its divisors is an integer number (1893559).

Almost surely, 2^9766729 is an apocalyptic number.

It is an amenable number.

9766729 is a deficient number, since it is larger than the sum of its proper divisors (1594625).

9766729 is a wasteful number, since it uses less digits than its factorization.

9766729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199335 (or 199328 counting only the distinct ones).

The product of its digits is 285768, while the sum is 46.

The square root of 9766729 is about 3125.1766350080. The cubic root of 9766729 is about 213.7550477018.

The spelling of 9766729 in words is "nine million, seven hundred sixty-six thousand, seven hundred twenty-nine".