8721195 has 16 divisors (see below), whose sum is σ = 15947520. Its totient is φ = 3986784.

The previous prime is 8721191. The next prime is 8721197. The reversal of 8721195 is 5911278.

It is not a de Polignac number, because 8721195 - 2² = 8721191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8721191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41425 + ... + 41634.

It is an arithmetic number, because the mean of its divisors is an integer number (996720).

Almost surely, 2^8721195 is an apocalyptic number.

8721195 is a deficient number, since it is larger than the sum of its proper divisors (7226325).

8721195 is a wasteful number, since it uses less digits than its factorization.

8721195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83074.

The product of its digits is 5040, while the sum is 33.

The square root of 8721195 is about 2953.1669441466. The cubic root of 8721195 is about 205.8378952185.

The spelling of 8721195 in words is "eight million, seven hundred twenty-one thousand, one hundred ninety-five".