217796 has 6 divisors (see below), whose sum is σ = 381150. Its totient is φ = 108896.

The previous prime is 217793. The next prime is 217823. The reversal of 217796 is 697712.

217796 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 215296 + 2500 = 464^2 + 50^2 .

It is not an unprimeable number, because it can be changed into a prime (217793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27221 + ... + 27228.

It is an arithmetic number, because the mean of its divisors is an integer number (63525).

2²¹⁷⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

217796 is a deficient number, since it is larger than the sum of its proper divisors (163354).

217796 is a wasteful number, since it uses less digits than its factorization.

217796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54453 (or 54451 counting only the distinct ones).

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

The square root of 217796 is about 466.6861900678. The cubic root of 217796 is about 60.1658375060.

The spelling of 217796 in words is "two hundred seventeen thousand, seven hundred ninety-six".