212697 has 6 divisors (see below), whose sum is σ = 307242. Its totient is φ = 141792.

The previous prime is 212683. The next prime is 212701. The reversal of 212697 is 796212.

It can be written as a sum of positive squares in only one way, i.e., 207936 + 4761 = 456^2 + 69^2 .

It is not a de Polignac number, because 212697 - 2⁶ = 212633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212697.

It is not an unprimeable number, because it can be changed into a prime (212627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11808 + ... + 11825.

It is an arithmetic number, because the mean of its divisors is an integer number (51207).

2²¹²⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

212697 is a deficient number, since it is larger than the sum of its proper divisors (94545).

212697 is a wasteful number, since it uses less digits than its factorization.

212697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23639 (or 23636 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 212697 is about 461.1908498659. The cubic root of 212697 is about 59.6925943862.

It can be divided in two parts, 212 and 697, that added together give a palindrome (909).

The spelling of 212697 in words is "two hundred twelve thousand, six hundred ninety-seven".