9686729 has 4 divisors (see below), whose sum is σ = 10431876. Its totient is φ = 8941584.

The previous prime is 9686707. The next prime is 9686759. The reversal of 9686729 is 9276869.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9276869 = 7 ⋅1325267.

It can be written as a sum of positive squares in 2 ways, for example, as 2096704 + 7590025 = 1448^2 + 2755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9686729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9686759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372554 + ... + 372579.

It is an arithmetic number, because the mean of its divisors is an integer number (2607969).

Almost surely, 2^9686729 is an apocalyptic number.

It is an amenable number.

9686729 is a deficient number, since it is larger than the sum of its proper divisors (745147).

9686729 is a wasteful number, since it uses less digits than its factorization.

9686729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745146.

The product of its digits is 326592, while the sum is 47.

The square root of 9686729 is about 3112.3510406122. The cubic root of 9686729 is about 213.1698190930.

The spelling of 9686729 in words is "nine million, six hundred eighty-six thousand, seven hundred twenty-nine".