7995857 has 6 divisors (see below), whose sum is σ = 8137218. Its totient is φ = 7856912.

The previous prime is 7995839. The next prime is 7995863. The reversal of 7995857 is 7585997.

It can be written as a sum of positive squares in only one way, i.e., 6739216 + 1256641 = 2596^2 + 1121^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7995857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7995817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2333 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (1356203).

Almost surely, 2^7995857 is an apocalyptic number.

It is an amenable number.

7995857 is a deficient number, since it is larger than the sum of its proper divisors (141361).

7995857 is an equidigital number, since it uses as much as digits as its factorization.

7995857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415 (or 2356 counting only the distinct ones).

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

The square root of 7995857 is about 2827.6946440519. The cubic root of 7995857 is about 199.9654690384.

The spelling of 7995857 in words is "seven million, nine hundred ninety-five thousand, eight hundred fifty-seven".