6805590157 has 2 divisors, whose sum is σ = 6805590158. Its totient is φ = 6805590156.

The previous prime is 6805590151. The next prime is 6805590251. The reversal of 6805590157 is 7510955086.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4254431076 + 2551159081 = 65226^2 + 50509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6805590157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6805590151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402795078 + 3402795079.

It is an arithmetic number, because the mean of its divisors is an integer number (3402795079).

Almost surely, 2^6805590157 is an apocalyptic number.

It is an amenable number.

6805590157 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805590157 is an equidigital number, since it uses as much as digits as its factorization.

6805590157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 46.

The square root of 6805590157 is about 82496.0008545869. Note that the first 3 decimals coincide. The cubic root of 6805590157 is about 1895.0554868964.

The spelling of 6805590157 in words is "six billion, eight hundred five million, five hundred ninety thousand, one hundred fifty-seven".