9661771 has 12 divisors (see below), whose sum is σ = 11729232. Its totient is φ = 7920528.

The previous prime is 9661759. The next prime is 9661777. The reversal of 9661771 is 1771669.

It is not a de Polignac number, because 9661771 - 2¹⁷ = 9530699 is a prime.

It is a Duffinian number.

9661771 is a modest number, since divided by 1771 gives 966 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 9661771.

It is not an unprimeable number, because it can be changed into a prime (9661777) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3160 + ... + 5413.

It is an arithmetic number, because the mean of its divisors is an integer number (977436).

Almost surely, 2^9661771 is an apocalyptic number.

9661771 is a deficient number, since it is larger than the sum of its proper divisors (2067461).

9661771 is a wasteful number, since it uses less digits than its factorization.

9661771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8610 (or 8603 counting only the distinct ones).

The product of its digits is 15876, while the sum is 37.

The square root of 9661771 is about 3108.3389454820. The cubic root of 9661771 is about 212.9865832395.

The spelling of 9661771 in words is "nine million, six hundred sixty-one thousand, seven hundred seventy-one".