7985717 has 4 divisors (see below), whose sum is σ = 8023776. Its totient is φ = 7947660.

The previous prime is 7985713. The next prime is 7985729. The reversal of 7985717 is 7175897.

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: 7175897 = 281 ⋅25537.

It is a cyclic number.

It is not a de Polignac number, because 7985717 - 2² = 7985713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985711) 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, 18713 + ... + 19134.

It is an arithmetic number, because the mean of its divisors is an integer number (2005944).

Almost surely, 2^7985717 is an apocalyptic number.

It is an amenable number.

7985717 is a deficient number, since it is larger than the sum of its proper divisors (38059).

7985717 is a wasteful number, since it uses less digits than its factorization.

7985717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38058.

The product of its digits is 123480, while the sum is 44.

The square root of 7985717 is about 2825.9010952261. The cubic root of 7985717 is about 199.8809040949.

The spelling of 7985717 in words is "seven million, nine hundred eighty-five thousand, seven hundred seventeen".