8212287 has 8 divisors (see below), whose sum is σ = 11088640. Its totient is φ = 5405400.

The previous prime is 8212283. The next prime is 8212291. The reversal of 8212287 is 7822128.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8212283) and next prime (8212291).

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

It is not a de Polignac number, because 8212287 - 2² = 8212283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17089 + ... + 17562.

It is an arithmetic number, because the mean of its divisors is an integer number (1386080).

Almost surely, 2^8212287 is an apocalyptic number.

8212287 is a deficient number, since it is larger than the sum of its proper divisors (2876353).

8212287 is a wasteful number, since it uses less digits than its factorization.

8212287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34733.

The product of its digits is 3584, while the sum is 30.

The square root of 8212287 is about 2865.7088128419. The cubic root of 8212287 is about 201.7536371761.

The spelling of 8212287 in words is "eight million, two hundred twelve thousand, two hundred eighty-seven".