9661271 has 6 divisors (see below), whose sum is σ = 9754200. Its totient is φ = 9569196.

The previous prime is 9661261. The next prime is 9661277. The reversal of 9661271 is 1721669.

It is a happy number.

It is not a de Polignac number, because 9661271 - 2⁶ = 9661207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15830 + ... + 16428.

It is an arithmetic number, because the mean of its divisors is an integer number (1625700).

Almost surely, 2^9661271 is an apocalyptic number.

9661271 is a deficient number, since it is larger than the sum of its proper divisors (92929).

9661271 is an equidigital number, since it uses as much as digits as its factorization.

9661271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 726 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 9661271 is about 3108.2585156322. The cubic root of 9661271 is about 212.9829091329.

The spelling of 9661271 in words is "nine million, six hundred sixty-one thousand, two hundred seventy-one".