7216005 has 8 divisors (see below), whose sum is σ = 11545632. Its totient is φ = 3848528.

The previous prime is 7215979. The next prime is 7216009. The reversal of 7216005 is 5006127.

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

It is a cyclic number.

It is not a de Polignac number, because 7216005 - 2⁶ = 7215941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216009) 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, 240519 + ... + 240548.

It is an arithmetic number, because the mean of its divisors is an integer number (1443204).

Almost surely, 2^7216005 is an apocalyptic number.

It is an amenable number.

7216005 is a deficient number, since it is larger than the sum of its proper divisors (4329627).

7216005 is a wasteful number, since it uses less digits than its factorization.

7216005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481075.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 7216005 is about 2686.2622731223. The cubic root of 7216005 is about 193.2408511964.

The spelling of 7216005 in words is "seven million, two hundred sixteen thousand, five".