7988217 has 8 divisors (see below), whose sum is σ = 10668000. Its totient is φ = 5316960.

The previous prime is 7988203. The next prime is 7988219. The reversal of 7988217 is 7128897.

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

It is not a de Polignac number, because 7988217 - 2⁷ = 7988089 is a prime.

It is a super-2 number, since 2×7988217² = 127623221678178, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7988219) 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, 534 + ... + 4032.

It is an arithmetic number, because the mean of its divisors is an integer number (1333500).

Almost surely, 2^7988217 is an apocalyptic number.

It is an amenable number.

7988217 is a deficient number, since it is larger than the sum of its proper divisors (2679783).

7988217 is a wasteful number, since it uses less digits than its factorization.

7988217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263.

The product of its digits is 56448, while the sum is 42.

The square root of 7988217 is about 2826.3433973953. The cubic root of 7988217 is about 199.9017600858.

The spelling of 7988217 in words is "seven million, nine hundred eighty-eight thousand, two hundred seventeen".