806669807 has 2 divisors, whose sum is σ = 806669808. Its totient is φ = 806669806.

The previous prime is 806669803. The next prime is 806669813. The reversal of 806669807 is 708966608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806669807 - 2² = 806669803 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806669803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403334903 + 403334904.

It is an arithmetic number, because the mean of its divisors is an integer number (403334904).

Almost surely, 2^806669807 is an apocalyptic number.

806669807 is a deficient number, since it is larger than the sum of its proper divisors (1).

806669807 is an equidigital number, since it uses as much as digits as its factorization.

806669807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 806669807 is about 28401.9331560371. The cubic root of 806669807 is about 930.8905051934.

The spelling of 806669807 in words is "eight hundred six million, six hundred sixty-nine thousand, eight hundred seven".