6805157 has 2 divisors, whose sum is σ = 6805158. Its totient is φ = 6805156.

The previous prime is 6805121. The next prime is 6805159. The reversal of 6805157 is 7515086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5885476 + 919681 = 2426^2 + 959^2 .

It is a cyclic number.

It is not a de Polignac number, because 6805157 - 2¹² = 6801061 is a prime.

Together with 6805159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6805159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402578 + 3402579.

It is an arithmetic number, because the mean of its divisors is an integer number (3402579).

Almost surely, 2^6805157 is an apocalyptic number.

It is an amenable number.

6805157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805157 is an equidigital number, since it uses as much as digits as its factorization.

6805157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 6805157 is about 2608.6695842900. The cubic root of 6805157 is about 189.5015281029.

The spelling of 6805157 in words is "six million, eight hundred five thousand, one hundred fifty-seven".