8406605081 has 12 divisors (see below), whose sum is σ = 10293803280. Its totient is φ = 6826415400.

The previous prime is 8406605071. The next prime is 8406605083. The reversal of 8406605081 is 1805066048.

It is not a de Polignac number, because 8406605081 - 2²² = 8402410777 is a prime.

It is a super-2 number, since 2×8406605081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8406605083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4513895 + ... + 4515756.

It is an arithmetic number, because the mean of its divisors is an integer number (857816940).

Almost surely, 2^8406605081 is an apocalyptic number.

It is an amenable number.

8406605081 is a deficient number, since it is larger than the sum of its proper divisors (1887198199).

8406605081 is a wasteful number, since it uses less digits than its factorization.

8406605081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9029684 (or 9029677 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 8406605081 is about 91687.5404894253. The cubic root of 8406605081 is about 2033.3253819958.

The spelling of 8406605081 in words is "eight billion, four hundred six million, six hundred five thousand, eighty-one".