8628217 has 4 divisors (see below), whose sum is σ = 9291940. Its totient is φ = 7964496.

The previous prime is 8628203. The next prime is 8628233. The reversal of 8628217 is 7128268.

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 4116841 + 4511376 = 2029^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 8628217 - 2¹¹ = 8626169 is a prime.

It is a super-2 number, since 2×8628217² = 148892257198178, which contains 22 as substring.

It is a Duffinian number.

8628217 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8628017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331842 + ... + 331867.

It is an arithmetic number, because the mean of its divisors is an integer number (2322985).

Almost surely, 2^8628217 is an apocalyptic number.

It is an amenable number.

8628217 is a deficient number, since it is larger than the sum of its proper divisors (663723).

8628217 is a wasteful number, since it uses less digits than its factorization.

8628217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663722.

The product of its digits is 10752, while the sum is 34.

The square root of 8628217 is about 2937.3826785082. The cubic root of 8628217 is about 205.1037903932.

The spelling of 8628217 in words is "eight million, six hundred twenty-eight thousand, two hundred seventeen".