8720265 has 8 divisors (see below), whose sum is σ = 13952448. Its totient is φ = 4650800.

The previous prime is 8720233. The next prime is 8720281. The reversal of 8720265 is 5620278.

8720265 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8720265 - 2⁵ = 8720233 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290661 + ... + 290690.

It is an arithmetic number, because the mean of its divisors is an integer number (1744056).

Almost surely, 2^8720265 is an apocalyptic number.

It is an amenable number.

8720265 is a deficient number, since it is larger than the sum of its proper divisors (5232183).

8720265 is a wasteful number, since it uses less digits than its factorization.

8720265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581359.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 8720265 is about 2953.0094818676. The cubic root of 8720265 is about 205.8305783295.

The spelling of 8720265 in words is "eight million, seven hundred twenty thousand, two hundred sixty-five".