7856801 has 2 divisors, whose sum is σ = 7856802. Its totient is φ = 7856800.

The previous prime is 7856759. The next prime is 7856803. The reversal of 7856801 is 1086587.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 1221025 = 2576^2 + 1105^2 .

It is an emirp because it is prime and its reverse (1086587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7856801 - 2¹⁰ = 7855777 is a prime.

It is a Sophie Germain prime.

Together with 7856803, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7856803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928400 + 3928401.

It is an arithmetic number, because the mean of its divisors is an integer number (3928401).

Almost surely, 2^7856801 is an apocalyptic number.

It is an amenable number.

7856801 is a deficient number, since it is larger than the sum of its proper divisors (1).

7856801 is an equidigital number, since it uses as much as digits as its factorization.

7856801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 7856801 is about 2802.9985729572. The cubic root of 7856801 is about 198.7994832159.

The spelling of 7856801 in words is "seven million, eight hundred fifty-six thousand, eight hundred one".