212536873 has 4 divisors (see below), whose sum is σ = 225039060. Its totient is φ = 200034688.

The previous prime is 212536861. The next prime is 212536921. The reversal of 212536873 is 378635212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158558464 + 53978409 = 12592^2 + 7347^2 .

It is a cyclic number.

It is not a de Polignac number, because 212536873 - 2¹³ = 212528681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212530873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6251068 + ... + 6251101.

It is an arithmetic number, because the mean of its divisors is an integer number (56259765).

Almost surely, 2^212536873 is an apocalyptic number.

It is an amenable number.

212536873 is a deficient number, since it is larger than the sum of its proper divisors (12502187).

212536873 is a wasteful number, since it uses less digits than its factorization.

212536873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12502186.

The product of its digits is 60480, while the sum is 37.

The square root of 212536873 is about 14578.6444157199. The cubic root of 212536873 is about 596.7761095014.

The spelling of 212536873 in words is "two hundred twelve million, five hundred thirty-six thousand, eight hundred seventy-three".