7997617 has 4 divisors (see below), whose sum is σ = 8044020. Its totient is φ = 7951216.

The previous prime is 7997581. The next prime is 7997621. The reversal of 7997617 is 7167997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7167997 = 19 ⋅377263.

It can be written as a sum of positive squares in 2 ways, for example, as 7789681 + 207936 = 2791^2 + 456^2 .

It is a cyclic number.

It is not a de Polignac number, because 7997617 - 2⁷ = 7997489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7997677) 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, 22942 + ... + 23287.

It is an arithmetic number, because the mean of its divisors is an integer number (2011005).

Almost surely, 2^7997617 is an apocalyptic number.

It is an amenable number.

7997617 is a deficient number, since it is larger than the sum of its proper divisors (46403).

7997617 is a wasteful number, since it uses less digits than its factorization.

7997617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46402.

The product of its digits is 166698, while the sum is 46.

The square root of 7997617 is about 2828.0058345060. The cubic root of 7997617 is about 199.9801396946.

The spelling of 7997617 in words is "seven million, nine hundred ninety-seven thousand, six hundred seventeen".