806017691 has 2 divisors, whose sum is σ = 806017692. Its totient is φ = 806017690.

The previous prime is 806017687. The next prime is 806017699. The reversal of 806017691 is 196710608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806017691 - 2² = 806017687 is a prime.

It is not a weakly prime, because it can be changed into another prime (806017699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403008845 + 403008846.

It is an arithmetic number, because the mean of its divisors is an integer number (403008846).

Almost surely, 2^806017691 is an apocalyptic number.

806017691 is a deficient number, since it is larger than the sum of its proper divisors (1).

806017691 is an equidigital number, since it uses as much as digits as its factorization.

806017691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 806017691 is about 28390.4507008959. The cubic root of 806017691 is about 930.6395920187.

The spelling of 806017691 in words is "eight hundred six million, seventeen thousand, six hundred ninety-one".