8170881 has 4 divisors (see below), whose sum is σ = 10894512. Its totient is φ = 5447252.

The previous prime is 8170873. The next prime is 8170901. The reversal of 8170881 is 1880718.

8170881 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8170881 - 2³ = 8170873 is a prime.

It is a super-2 number, since 2×8170881² = 133526592632322, which contains 22 as substring.

8170881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8170831) 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, 1361811 + ... + 1361816.

It is an arithmetic number, because the mean of its divisors is an integer number (2723628).

Almost surely, 2^8170881 is an apocalyptic number.

It is an amenable number.

8170881 is a deficient number, since it is larger than the sum of its proper divisors (2723631).

8170881 is a wasteful number, since it uses less digits than its factorization.

8170881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723630.

The product of its (nonzero) digits is 3584, while the sum is 33.

The square root of 8170881 is about 2858.4752928791. The cubic root of 8170881 is about 201.4139879646.

The spelling of 8170881 in words is "eight million, one hundred seventy thousand, eight hundred eighty-one".