7997585 has 8 divisors (see below), whose sum is σ = 9638376. Its totient is φ = 6370560.

The previous prime is 7997581. The next prime is 7997621. The reversal of 7997585 is 5857997.

It is a Cunningham number, because it is equal to 2828²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 118336 + 7879249 = 344^2 + 2807^2 .

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

It is not a de Polignac number, because 7997585 - 2² = 7997581 is a prime.

It is a super-2 number, since 2×7997585² = 127922731664450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7997581) 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, 2114 + ... + 4523.

It is an arithmetic number, because the mean of its divisors is an integer number (1204797).

Almost surely, 2^7997585 is an apocalyptic number.

It is an amenable number.

7997585 is a deficient number, since it is larger than the sum of its proper divisors (1640791).

7997585 is a wasteful number, since it uses less digits than its factorization.

7997585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883.

The product of its digits is 793800, while the sum is 50.

The square root of 7997585 is about 2828.0001768034. Note that the first 3 decimals coincide. The cubic root of 7997585 is about 199.9798729746.

The spelling of 7997585 in words is "seven million, nine hundred ninety-seven thousand, five hundred eighty-five".