7210345 has 4 divisors (see below), whose sum is σ = 8652420. Its totient is φ = 5768272.

The previous prime is 7210337. The next prime is 7210349. The reversal of 7210345 is 5430127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3717184 + 3493161 = 1928^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 7210345 - 2³ = 7210337 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (7210349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 721030 + ... + 721039.

It is an arithmetic number, because the mean of its divisors is an integer number (2163105).

Almost surely, 2^7210345 is an apocalyptic number.

It is an amenable number.

7210345 is a deficient number, since it is larger than the sum of its proper divisors (1442075).

7210345 is a wasteful number, since it uses less digits than its factorization.

7210345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442074.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 7210345 is about 2685.2085580081. The cubic root of 7210345 is about 193.1903140313.

The spelling of 7210345 in words is "seven million, two hundred ten thousand, three hundred forty-five".