8256971 has 4 divisors (see below), whose sum is σ = 8275344. Its totient is φ = 8238600.

The previous prime is 8256961. The next prime is 8256973. The reversal of 8256971 is 1796528.

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 8256971 - 2⁶ = 8256907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8256973) 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, 8495 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (2068836).

Almost surely, 2^8256971 is an apocalyptic number.

8256971 is a deficient number, since it is larger than the sum of its proper divisors (18373).

8256971 is a wasteful number, since it uses less digits than its factorization.

8256971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18372.

The product of its digits is 30240, while the sum is 38.

The square root of 8256971 is about 2873.4945623752. The cubic root of 8256971 is about 202.1188970982.

The spelling of 8256971 in words is "eight million, two hundred fifty-six thousand, nine hundred seventy-one".