8641971 has 40 divisors (see below), whose sum is σ = 14432880. Its totient is φ = 5116608.

The previous prime is 8641957. The next prime is 8641987. The reversal of 8641971 is 1791468.

8641971 is a `hidden beast` number, since 8 + 641 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 8641971 - 2¹¹ = 8639923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8641991) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30396 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (360822).

Almost surely, 2^8641971 is an apocalyptic number.

8641971 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8641971 is a deficient number, since it is larger than the sum of its proper divisors (5790909).

8641971 is a wasteful number, since it uses less digits than its factorization.

8641971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 328 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 8641971 is about 2939.7229461294. The cubic root of 8641971 is about 205.2127159453.

The spelling of 8641971 in words is "eight million, six hundred forty-one thousand, nine hundred seventy-one".