8212165 has 8 divisors (see below), whose sum is σ = 10612728. Its totient is φ = 6064320.

The previous prime is 8212163. The next prime is 8212189. The reversal of 8212165 is 5612128.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 7935489 = 526^2 + 2817^2 .

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

It is not a de Polignac number, because 8212165 - 2¹ = 8212163 is a prime.

It is a Duffinian number.

8212165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63106 + ... + 63235.

It is an arithmetic number, because the mean of its divisors is an integer number (1326591).

Almost surely, 2^8212165 is an apocalyptic number.

It is an amenable number.

8212165 is a deficient number, since it is larger than the sum of its proper divisors (2400563).

8212165 is a wasteful number, since it uses less digits than its factorization.

8212165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126359.

The product of its digits is 960, while the sum is 25.

The square root of 8212165 is about 2865.6875265807. The cubic root of 8212165 is about 201.7526381014.

The spelling of 8212165 in words is "eight million, two hundred twelve thousand, one hundred sixty-five".