8619971 has 4 divisors (see below), whose sum is σ = 8761344. Its totient is φ = 8478600.

The previous prime is 8619943. The next prime is 8619997. The reversal of 8619971 is 1799168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8619971 - 2¹⁸ = 8357827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8619071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70595 + ... + 70716.

It is an arithmetic number, because the mean of its divisors is an integer number (2190336).

Almost surely, 2^8619971 is an apocalyptic number.

8619971 is a deficient number, since it is larger than the sum of its proper divisors (141373).

8619971 is a wasteful number, since it uses less digits than its factorization.

8619971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141372.

The product of its digits is 27216, while the sum is 41.

The square root of 8619971 is about 2935.9787124569. The cubic root of 8619971 is about 205.0384302333.

The spelling of 8619971 in words is "eight million, six hundred nineteen thousand, nine hundred seventy-one".