216596 has 12 divisors (see below), whose sum is σ = 382452. Its totient is φ = 107328.

The previous prime is 216577. The next prime is 216607. The reversal of 216596 is 695612.

It can be written as a sum of positive squares in 2 ways, for example, as 84100 + 132496 = 290^2 + 364^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 216596.

It is an unprimeable number.

216596 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (31871).

2²¹⁶⁵⁹⁶ is an apocalyptic number.

It is an amenable number.

216596 is a deficient number, since it is larger than the sum of its proper divisors (165856).

216596 is a wasteful number, since it uses less digits than its factorization.

216596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 488 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 216596 is about 465.3987537585. The cubic root of 216596 is about 60.0551345061.

The spelling of 216596 in words is "two hundred sixteen thousand, five hundred ninety-six".