806245691 has 2 divisors, whose sum is σ = 806245692. Its totient is φ = 806245690.

The previous prime is 806245673. The next prime is 806245697. The reversal of 806245691 is 196542608.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806245691 - 2¹⁰ = 806244667 is a prime.

It is a super-2 number, since 2×806245691² = 1300064228512134962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (806245697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403122845 + 403122846.

It is an arithmetic number, because the mean of its divisors is an integer number (403122846).

Almost surely, 2^806245691 is an apocalyptic number.

806245691 is a deficient number, since it is larger than the sum of its proper divisors (1).

806245691 is an equidigital number, since it uses as much as digits as its factorization.

806245691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 806245691 is about 28394.4658516409. The cubic root of 806245691 is about 930.7273344365.

The spelling of 806245691 in words is "eight hundred six million, two hundred forty-five thousand, six hundred ninety-one".