20696 has 16 divisors (see below), whose sum is σ = 42000. Its totient is φ = 9504.

The previous prime is 20693. The next prime is 20707. The reversal of 20696 is 69602.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

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 20696.

It is not an unprimeable number, because it can be changed into a prime (20693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5 + ... + 203.

It is an arithmetic number, because the mean of its divisors is an integer number (2625).

2²⁰⁶⁹⁶ is an apocalyptic number.

20696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21000).

20696 is an abundant number, since it is smaller than the sum of its proper divisors (21304).

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

20696 is a wasteful number, since it uses less digits than its factorization.

20696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 20696 is about 143.8610440668. The cubic root of 20696 is about 27.4554651070.

The spelling of 20696 in words is "twenty thousand, six hundred ninety-six".