8168961 has 4 divisors (see below), whose sum is σ = 10891952. Its totient is φ = 5445972.

The previous prime is 8168947. The next prime is 8168983. The reversal of 8168961 is 1698618.

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 not a de Polignac number, because 8168961 - 2⁷ = 8168833 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8168911) 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, 1361491 + ... + 1361496.

It is an arithmetic number, because the mean of its divisors is an integer number (2722988).

Almost surely, 2^8168961 is an apocalyptic number.

It is an amenable number.

8168961 is a deficient number, since it is larger than the sum of its proper divisors (2722991).

8168961 is a wasteful number, since it uses less digits than its factorization.

8168961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722990.

The product of its digits is 20736, while the sum is 39.

The square root of 8168961 is about 2858.1394297690. The cubic root of 8168961 is about 201.3982105900.

The spelling of 8168961 in words is "eight million, one hundred sixty-eight thousand, nine hundred sixty-one".