7205705 has 16 divisors (see below), whose sum is σ = 9861264. Its totient is φ = 5007360.

The previous prime is 7205687. The next prime is 7205743. The reversal of 7205705 is 5075027.

7205705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 135424 + 7070281 = 368^2 + 2659^2 .

It is not a de Polignac number, because 7205705 - 2⁶ = 7205641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2156 + ... + 4365.

It is an arithmetic number, because the mean of its divisors is an integer number (616329).

Almost surely, 2^7205705 is an apocalyptic number.

It is an amenable number.

7205705 is a deficient number, since it is larger than the sum of its proper divisors (2655559).

7205705 is a wasteful number, since it uses less digits than its factorization.

7205705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556.

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 7205705 is about 2684.3444264848. The cubic root of 7205705 is about 193.1488645394.

The spelling of 7205705 in words is "seven million, two hundred five thousand, seven hundred five".