9726731 has 4 divisors (see below), whose sum is σ = 11116272. Its totient is φ = 8337192.

The previous prime is 9726713. The next prime is 9726733. The reversal of 9726731 is 1376279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1376279 = 263 ⋅5233.

It is a cyclic number.

It is not a de Polignac number, because 9726731 - 2⁶ = 9726667 is a prime.

It is a super-2 number, since 2×9726731² = 189218591892722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9726691 and 9726700.

It is not an unprimeable number, because it can be changed into a prime (9726733) 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 3 ways as a sum of consecutive naturals, for example, 694760 + ... + 694773.

It is an arithmetic number, because the mean of its divisors is an integer number (2779068).

Almost surely, 2^9726731 is an apocalyptic number.

9726731 is a deficient number, since it is larger than the sum of its proper divisors (1389541).

9726731 is a wasteful number, since it uses less digits than its factorization.

9726731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389540.

The product of its digits is 15876, while the sum is 35.

The square root of 9726731 is about 3118.7707514340. The cubic root of 9726731 is about 213.4628491430.

The spelling of 9726731 in words is "nine million, seven hundred twenty-six thousand, seven hundred thirty-one".