8661071 has 4 divisors (see below), whose sum is σ = 8895192. Its totient is φ = 8426952.

The previous prime is 8661061. The next prime is 8661089. The reversal of 8661071 is 1701668.

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 8661071 - 2¹⁸ = 8398927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117005 + ... + 117078.

It is an arithmetic number, because the mean of its divisors is an integer number (2223798).

Almost surely, 2^8661071 is an apocalyptic number.

8661071 is a deficient number, since it is larger than the sum of its proper divisors (234121).

8661071 is a wasteful number, since it uses less digits than its factorization.

8661071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234120.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8661071 is about 2942.9697585942. The cubic root of 8661071 is about 205.3637879178.

The spelling of 8661071 in words is "eight million, six hundred sixty-one thousand, seventy-one".