1008217 has 4 divisors (see below), whose sum is σ = 1152256. Its totient is φ = 864180.

The previous prime is 1008209. The next prime is 1008223. The reversal of 1008217 is 7128001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7128001 = 607 ⋅11743.

It is a cyclic number.

It is not a de Polignac number, because 1008217 - 2³ = 1008209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1008194 and 1008203.

It is not an unprimeable number, because it can be changed into a prime (1008247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72009 + ... + 72022.

It is an arithmetic number, because the mean of its divisors is an integer number (288064).

2^1008217 is an apocalyptic number.

It is an amenable number.

1008217 is a deficient number, since it is larger than the sum of its proper divisors (144039).

1008217 is an equidigital number, since it uses as much as digits as its factorization.

1008217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144038.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1008217 is about 1004.1000946121. The cubic root of 1008217 is about 100.2731531940.

It can be divided in two parts, 1008 and 217, that added together give a triangular number (1225 = T₄₉).

The spelling of 1008217 in words is "one million, eight thousand, two hundred seventeen".