9775966 has 12 divisors (see below), whose sum is σ = 15334776. Its totient is φ = 4665320.

The previous prime is 9775949. The next prime is 9775993. The reversal of 9775966 is 6695779.

It is a super-2 number, since 2×9775966² = 191139022466312, which contains 22 as substring.

Its product of digits (714420) is a multiple of the sum of its prime divisors (486).

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 20976 + ... + 21436.

It is an arithmetic number, because the mean of its divisors is an integer number (1277898).

Almost surely, 2^9775966 is an apocalyptic number.

9775966 is a deficient number, since it is larger than the sum of its proper divisors (5558810).

9775966 is an equidigital number, since it uses as much as digits as its factorization.

9775966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947 (or 486 counting only the distinct ones).

The product of its digits is 714420, while the sum is 49.

The square root of 9775966 is about 3126.6541222207. The cubic root of 9775966 is about 213.8224135943.

The spelling of 9775966 in words is "nine million, seven hundred seventy-five thousand, nine hundred sixty-six".