806881909667 has 2 divisors, whose sum is σ = 806881909668. Its totient is φ = 806881909666.

The previous prime is 806881909663. The next prime is 806881909693. The reversal of 806881909667 is 766909188608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806881909667 - 2² = 806881909663 is a prime.

It is a super-2 number, since 2×806881909667² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 806881909597 and 806881909606.

It is not a weakly prime, because it can be changed into another prime (806881909663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403440954833 + 403440954834.

It is an arithmetic number, because the mean of its divisors is an integer number (403440954834).

Almost surely, 2^806881909667 is an apocalyptic number.

806881909667 is a deficient number, since it is larger than the sum of its proper divisors (1).

806881909667 is an equidigital number, since it uses as much as digits as its factorization.

806881909667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62705664, while the sum is 68.

The spelling of 806881909667 in words is "eight hundred six billion, eight hundred eighty-one million, nine hundred nine thousand, six hundred sixty-seven".