806866499 has 2 divisors, whose sum is σ = 806866500. Its totient is φ = 806866498.

The previous prime is 806866471. The next prime is 806866517. The reversal of 806866499 is 994668608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806866499 - 2²⁰ = 805817923 is a prime.

It is not a weakly prime, because it can be changed into another prime (806866199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403433249 + 403433250.

It is an arithmetic number, because the mean of its divisors is an integer number (403433250).

Almost surely, 2^806866499 is an apocalyptic number.

806866499 is a deficient number, since it is larger than the sum of its proper divisors (1).

806866499 is an equidigital number, since it uses as much as digits as its factorization.

806866499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The square root of 806866499 is about 28405.3955966116. The cubic root of 806866499 is about 930.9661593763.

The spelling of 806866499 in words is "eight hundred six million, eight hundred sixty-six thousand, four hundred ninety-nine".