7997217 has 8 divisors (see below), whose sum is σ = 10951296. Its totient is φ = 5187312.

The previous prime is 7997207. The next prime is 7997219. The reversal of 7997217 is 7127997.

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

It is not a de Polignac number, because 7997217 - 2⁴ = 7997201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7997219) 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, 35913 + ... + 36134.

It is an arithmetic number, because the mean of its divisors is an integer number (1368912).

Almost surely, 2^7997217 is an apocalyptic number.

It is an amenable number.

7997217 is a deficient number, since it is larger than the sum of its proper divisors (2954079).

7997217 is a wasteful number, since it uses less digits than its factorization.

7997217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72087.

The product of its digits is 55566, while the sum is 42.

The square root of 7997217 is about 2827.9351124098. The cubic root of 7997217 is about 199.9768056435.

The spelling of 7997217 in words is "seven million, nine hundred ninety-seven thousand, two hundred seventeen".