806866471 has 2 divisors, whose sum is σ = 806866472. Its totient is φ = 806866470.

The previous prime is 806866441. The next prime is 806866499. The reversal of 806866471 is 174668608.

It is a happy number.

806866471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806866471 - 2¹⁹ = 806342183 is a prime.

It is a super-3 number, since 3×806866471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806866441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403433235 + 403433236.

It is an arithmetic number, because the mean of its divisors is an integer number (403433236).

Almost surely, 2^806866471 is an apocalyptic number.

806866471 is a deficient number, since it is larger than the sum of its proper divisors (1).

806866471 is an equidigital number, since it uses as much as digits as its factorization.

806866471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 806866471 is about 28405.3951037475. The cubic root of 806866471 is about 930.9661486075.

The spelling of 806866471 in words is "eight hundred six million, eight hundred sixty-six thousand, four hundred seventy-one".