806127643 has 2 divisors, whose sum is σ = 806127644. Its totient is φ = 806127642.

The previous prime is 806127629. The next prime is 806127671. The reversal of 806127643 is 346721608.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806127643 is a prime.

It is not a weakly prime, because it can be changed into another prime (806121643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403063821 + 403063822.

It is an arithmetic number, because the mean of its divisors is an integer number (403063822).

Almost surely, 2^806127643 is an apocalyptic number.

806127643 is a deficient number, since it is larger than the sum of its proper divisors (1).

806127643 is an equidigital number, since it uses as much as digits as its factorization.

806127643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 806127643 is about 28392.3870606189. The cubic root of 806127643 is about 930.6819074803.

The spelling of 806127643 in words is "eight hundred six million, one hundred twenty-seven thousand, six hundred forty-three".