212887085 has 8 divisors (see below), whose sum is σ = 262369176. Its totient is φ = 165706560.

The previous prime is 212887079. The next prime is 212887117. The reversal of 212887085 is 580788212.

It can be written as a sum of positive squares in 4 ways, for example, as 32844361 + 180042724 = 5731^2 + 13418^2 .

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

It is not a de Polignac number, because 212887085 - 2⁴ = 212887069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 575186 + ... + 575555.

It is an arithmetic number, because the mean of its divisors is an integer number (32796147).

Almost surely, 2^212887085 is an apocalyptic number.

It is an amenable number.

212887085 is a deficient number, since it is larger than the sum of its proper divisors (49482091).

212887085 is a wasteful number, since it uses less digits than its factorization.

212887085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150783.

The product of its (nonzero) digits is 71680, while the sum is 41.

The square root of 212887085 is about 14590.6506023549. The cubic root of 212887085 is about 597.1037129947.

The spelling of 212887085 in words is "two hundred twelve million, eight hundred eighty-seven thousand, eighty-five".