7648217 has 2 divisors, whose sum is σ = 7648218. Its totient is φ = 7648216.

The previous prime is 7648211. The next prime is 7648219. The reversal of 7648217 is 7128467.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5180176 + 2468041 = 2276^2 + 1571^2 .

It is an emirp because it is prime and its reverse (7128467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7648217 - 2¹⁰ = 7647193 is a prime.

Together with 7648219, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7648211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824108 + 3824109.

It is an arithmetic number, because the mean of its divisors is an integer number (3824109).

Almost surely, 2^7648217 is an apocalyptic number.

It is an amenable number.

7648217 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648217 is an equidigital number, since it uses as much as digits as its factorization.

7648217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 7648217 is about 2765.5409958994. The cubic root of 7648217 is about 197.0244242953.

The spelling of 7648217 in words is "seven million, six hundred forty-eight thousand, two hundred seventeen".