211696 has 20 divisors (see below), whose sum is σ = 417384. Its totient is φ = 104000.

The previous prime is 211693. The next prime is 211711. The reversal of 211696 is 696112.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 211696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211691) 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, 1551 + ... + 1681.

2²¹¹⁶⁹⁶ is an apocalyptic number.

It is an amenable number.

211696 is a deficient number, since it is larger than the sum of its proper divisors (205688).

211696 is a wasteful number, since it uses less digits than its factorization.

211696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 234 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 211696 is about 460.1043359935. The cubic root of 211696 is about 59.5988048347.

Subtracting 211696 from its reverse (696112), we obtain a square (484416 = 696²).

The spelling of 211696 in words is "two hundred eleven thousand, six hundred ninety-six".