9906782 has 4 divisors (see below), whose sum is σ = 14860176. Its totient is φ = 4953390.

The previous prime is 9906781. The next prime is 9906791. The reversal of 9906782 is 2876099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2876099 = 1163 ⋅2473.

It is a super-3 number, since 3×9906782³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906781) 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 as a sum of consecutive naturals, namely, 2476694 + ... + 2476697.

It is an arithmetic number, because the mean of its divisors is an integer number (3715044).

Almost surely, 2^9906782 is an apocalyptic number.

9906782 is a deficient number, since it is larger than the sum of its proper divisors (4953394).

9906782 is a wasteful number, since it uses less digits than its factorization.

9906782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953393.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 9906782 is about 3147.5040905454. The cubic root of 9906782 is about 214.7719377239.

The spelling of 9906782 in words is "nine million, nine hundred six thousand, seven hundred eighty-two".