9771966 has 24 divisors (see below), whose sum is σ = 22287720. Its totient is φ = 3085776.

The previous prime is 9771961. The next prime is 9771967. The reversal of 9771966 is 6691779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9771961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13945 + ... + 14628.

It is an arithmetic number, because the mean of its divisors is an integer number (928655).

Almost surely, 2^9771966 is an apocalyptic number.

9771966 is an abundant number, since it is smaller than the sum of its proper divisors (12515754).

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

9771966 is a wasteful number, since it uses less digits than its factorization.

9771966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600 (or 28597 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 9771966 is about 3126.0143953603. The cubic root of 9771966 is about 213.7932466102.

The spelling of 9771966 in words is "nine million, seven hundred seventy-one thousand, nine hundred sixty-six".