9699778 has 16 divisors (see below), whose sum is σ = 16076160. Its totient is φ = 4352400.

The previous prime is 9699773. The next prime is 9699799. The reversal of 9699778 is 8779969.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9699773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (1004760).

Almost surely, 2^9699778 is an apocalyptic number.

9699778 is a deficient number, since it is larger than the sum of its proper divisors (6376382).

9699778 is a wasteful number, since it uses less digits than its factorization.

9699778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673.

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

The square root of 9699778 is about 3114.4466603235. The cubic root of 9699778 is about 213.2654965519.

The spelling of 9699778 in words is "nine million, six hundred ninety-nine thousand, seven hundred seventy-eight".