9777966 has 16 divisors (see below), whose sum is σ = 21333888. Its totient is φ = 2963000.

The previous prime is 9777949. The next prime is 9777973. The reversal of 9777966 is 6697779.

9777966 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74010 + ... + 74141.

It is an arithmetic number, because the mean of its divisors is an integer number (1333368).

Almost surely, 2^9777966 is an apocalyptic number.

9777966 is an abundant number, since it is smaller than the sum of its proper divisors (11555922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9777966 is a wasteful number, since it uses less digits than its factorization.

9777966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148167.

The product of its digits is 1000188, while the sum is 51.

The square root of 9777966 is about 3126.9739365719. The cubic root of 9777966 is about 213.8369941028.

Subtracting from 9777966 its product of digits (1000188), we obtain a palindrome (8777778).

The spelling of 9777966 in words is "nine million, seven hundred seventy-seven thousand, nine hundred sixty-six".