7216709 has 8 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 7022176.

The previous prime is 7216691. The next prime is 7216711. The reversal of 7216709 is 9076127.

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

It is not a de Polignac number, because 7216709 - 2⁸ = 7216453 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10622 + ... + 11280.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^7216709 is an apocalyptic number.

It is an amenable number.

7216709 is a deficient number, since it is larger than the sum of its proper divisors (196411).

7216709 is a wasteful number, since it uses less digits than its factorization.

7216709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 7216709 is about 2686.3933070197. The cubic root of 7216709 is about 193.2471352430.

The spelling of 7216709 in words is "seven million, two hundred sixteen thousand, seven hundred nine".