213696 has 84 divisors (see below), whose sum is σ = 713232. Its totient is φ = 59904.

The previous prime is 213659. The next prime is 213713. The reversal of 213696 is 696312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

213696 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 11 ways as a sum of consecutive naturals, for example, 4006 + ... + 4058.

2²¹³⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356616).

213696 is an abundant number, since it is smaller than the sum of its proper divisors (499536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213696 is a wasteful number, since it uses less digits than its factorization.

213696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 65 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 213696 is about 462.2726468222. The cubic root of 213696 is about 59.7859036210.

It can be divided in two parts, 213 and 696, that added together give a palindrome (909).

The spelling of 213696 in words is "two hundred thirteen thousand, six hundred ninety-six".