7205865 has 8 divisors (see below), whose sum is σ = 11529408. Its totient is φ = 3843120.

The previous prime is 7205851. The next prime is 7205893. The reversal of 7205865 is 5685027.

It is a happy number.

7205865 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 7205865 - 2¹⁵ = 7173097 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 15.

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, 240181 + ... + 240210.

It is an arithmetic number, because the mean of its divisors is an integer number (1441176).

Almost surely, 2^7205865 is an apocalyptic number.

It is an amenable number.

7205865 is a deficient number, since it is larger than the sum of its proper divisors (4323543).

7205865 is a wasteful number, since it uses less digits than its factorization.

7205865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480399.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 7205865 is about 2684.3742287543. The cubic root of 7205865 is about 193.1502941284.

The spelling of 7205865 in words is "seven million, two hundred five thousand, eight hundred sixty-five".