212774 has 8 divisors (see below), whose sum is σ = 321408. Its totient is φ = 105640.

The previous prime is 212701. The next prime is 212777. The reversal of 212774 is 477212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a Curzon number.

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 212774.

It is not an unprimeable number, because it can be changed into a prime (212777) by changing a digit.

212774 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104 + ... + 660.

It is an arithmetic number, because the mean of its divisors is an integer number (40176).

2²¹²⁷⁷⁴ is an apocalyptic number.

212774 is a deficient number, since it is larger than the sum of its proper divisors (108634).

212774 is a wasteful number, since it uses less digits than its factorization.

212774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its digits is 784, while the sum is 23.

The square root of 212774 is about 461.2743218520. The cubic root of 212774 is about 59.6997967684.

Adding to 212774 its reverse (477212), we get a palindrome (689986).

The spelling of 212774 in words is "two hundred twelve thousand, seven hundred seventy-four", and thus it is an iban number.