9996778 has 24 divisors (see below), whose sum is σ = 16686180. Its totient is φ = 4488000.

The previous prime is 9996757. The next prime is 9996781. The reversal of 9996778 is 8776999.

It can be written as a sum of positive squares in 2 ways, for example, as 7382089 + 2614689 = 2717^2 + 1617^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 24238 + ... + 24646.

Almost surely, 2^9996778 is an apocalyptic number.

9996778 is a deficient number, since it is larger than the sum of its proper divisors (6689402).

9996778 is a wasteful number, since it uses less digits than its factorization.

9996778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 523 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 55.

The square root of 9996778 is about 3161.7681761951. The cubic root of 9996778 is about 215.4203278891.

It can be divided in two parts, 999 and 6778, that added together give a palindrome (7777).

The spelling of 9996778 in words is "nine million, nine hundred ninety-six thousand, seven hundred seventy-eight".