806606091 has 12 divisors (see below), whose sum is σ = 1175409768. Its totient is φ = 532977984.

The previous prime is 806606077. The next prime is 806606093. The reversal of 806606091 is 190606608.

It is a de Polignac number, because none of the positive numbers 2^k-806606091 is a prime.

It is a super-2 number, since 2×806606091² = 1301226772076600562, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (806606093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395545 + ... + 397578.

It is an arithmetic number, because the mean of its divisors is an integer number (97950814).

Almost surely, 2^806606091 is an apocalyptic number.

806606091 is a deficient number, since it is larger than the sum of its proper divisors (368803677).

806606091 is a wasteful number, since it uses less digits than its factorization.

806606091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793242 (or 793239 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 806606091 is about 28400.8114496752. The cubic root of 806606091 is about 930.8659952966.

The spelling of 806606091 in words is "eight hundred six million, six hundred six thousand, ninety-one".