7957867 has 2 divisors, whose sum is σ = 7957868. Its totient is φ = 7957866.

The previous prime is 7957847. The next prime is 7957871. The reversal of 7957867 is 7687597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7957867 - 2⁷ = 7957739 is a prime.

It is a Chen prime.

It is an Ulam number.

7957867 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7957867.

It is not a weakly prime, because it can be changed into another prime (7957837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3978933 + 3978934.

It is an arithmetic number, because the mean of its divisors is an integer number (3978934).

Almost surely, 2^7957867 is an apocalyptic number.

7957867 is a deficient number, since it is larger than the sum of its proper divisors (1).

7957867 is an equidigital number, since it uses as much as digits as its factorization.

7957867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 49.

The square root of 7957867 is about 2820.9691597038. The cubic root of 7957867 is about 199.6482734715.

The spelling of 7957867 in words is "seven million, nine hundred fifty-seven thousand, eight hundred sixty-seven".