7216345 has 8 divisors (see below), whose sum is σ = 8739720. Its totient is φ = 5719680.

The previous prime is 7216343. The next prime is 7216351. The reversal of 7216345 is 5436127.

It can be written as a sum of positive squares in 4 ways, for example, as 3575881 + 3640464 = 1891^2 + 1908^2 .

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

It is not a de Polignac number, because 7216345 - 2¹ = 7216343 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 (7216343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6076 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (1092465).

Almost surely, 2^7216345 is an apocalyptic number.

It is an amenable number.

7216345 is a deficient number, since it is larger than the sum of its proper divisors (1523375).

7216345 is a wasteful number, since it uses less digits than its factorization.

7216345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13355.

The product of its digits is 5040, while the sum is 28.

The square root of 7216345 is about 2686.3255573366. The cubic root of 7216345 is about 193.2438861563.

The spelling of 7216345 in words is "seven million, two hundred sixteen thousand, three hundred forty-five".