8720895 has 8 divisors (see below), whose sum is σ = 13953456. Its totient is φ = 4651136.

The previous prime is 8720891. The next prime is 8720911. The reversal of 8720895 is 5980278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8720895 - 2² = 8720891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290682 + ... + 290711.

It is an arithmetic number, because the mean of its divisors is an integer number (1744182).

Almost surely, 2^8720895 is an apocalyptic number.

8720895 is a deficient number, since it is larger than the sum of its proper divisors (5232561).

8720895 is a wasteful number, since it uses less digits than its factorization.

8720895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581401.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 8720895 is about 2953.1161507804. The cubic root of 8720895 is about 205.8355349886.

The spelling of 8720895 in words is "eight million, seven hundred twenty thousand, eight hundred ninety-five".