216207616 has 27 divisors (see below), whose sum is σ = 432040791. Its totient is φ = 107986176.

The previous prime is 216207599. The next prime is 216207679. The reversal of 216207616 is 616702612.

It is a happy number.

The square root of 216207616 is 14704.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 234805 + ... + 235723.

Almost surely, 2^216207616 is an apocalyptic number.

216207616 is the 14704-th square number.

It is an amenable number.

216207616 is a deficient number, since it is larger than the sum of its proper divisors (215833175).

216207616 is an frugal number, since it uses more digits than its factorization.

216207616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The cubic root of 216207616 is about 600.1921754781.

The spelling of 216207616 in words is "two hundred sixteen million, two hundred seven thousand, six hundred sixteen".