8506881 has 6 divisors (see below), whose sum is σ = 12287730. Its totient is φ = 5671248.

The previous prime is 8506867. The next prime is 8506907. The reversal of 8506881 is 1886058.

It can be written as a sum of positive squares in only one way, i.e., 8071281 + 435600 = 2841^2 + 660^2 .

It is not a de Polignac number, because 8506881 - 2²³ = 118273 is a prime.

It is a super-2 number, since 2×8506881² = 144734048696322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8506801) 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, 472596 + ... + 472613.

It is an arithmetic number, because the mean of its divisors is an integer number (2047955).

Almost surely, 2^8506881 is an apocalyptic number.

It is an amenable number.

8506881 is a deficient number, since it is larger than the sum of its proper divisors (3780849).

8506881 is a wasteful number, since it uses less digits than its factorization.

8506881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945215 (or 945212 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 8506881 is about 2916.6557904559. The cubic root of 8506881 is about 204.1378105731.

The spelling of 8506881 in words is "eight million, five hundred six thousand, eight hundred eighty-one".