9682720906 has 8 divisors (see below), whose sum is σ = 15378439140. Its totient is φ = 4556574528.

The previous prime is 9682720837. The next prime is 9682720909. The reversal of 9682720906 is 6090272869.

It can be written as a sum of positive squares in 2 ways, for example, as 9579515625 + 103205281 = 97875^2 + 10159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9682720906.

It is not an unprimeable number, because it can be changed into a prime (9682720909) 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, 142392921 + ... + 142392988.

Almost surely, 2^9682720906 is an apocalyptic number.

9682720906 is a deficient number, since it is larger than the sum of its proper divisors (5695718234).

9682720906 is a wasteful number, since it uses less digits than its factorization.

9682720906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284785928.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 9682720906 is about 98400.8176083919. The cubic root of 9682720906 is about 2131.4041382648.

The spelling of 9682720906 in words is "nine billion, six hundred eighty-two million, seven hundred twenty thousand, nine hundred six".