7210705 has 12 divisors (see below), whose sum is σ = 8991540. Its totient is φ = 5544672.

The previous prime is 7210699. The next prime is 7210717. The reversal of 7210705 is 5070127.

It can be written as a sum of positive squares in 2 ways, for example, as 3182656 + 4028049 = 1784^2 + 2007^2 .

It is not a de Polignac number, because 7210705 - 2¹³ = 7202513 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32224 + ... + 32446.

It is an arithmetic number, because the mean of its divisors is an integer number (749295).

Almost surely, 2^7210705 is an apocalyptic number.

It is an amenable number.

7210705 is a deficient number, since it is larger than the sum of its proper divisors (1780835).

7210705 is an equidigital number, since it uses as much as digits as its factorization.

7210705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 7210705 is about 2685.2755910707. The cubic root of 7210705 is about 193.1935291967.

The spelling of 7210705 in words is "seven million, two hundred ten thousand, seven hundred five".