8166081 has 64 divisors (see below), whose sum is σ = 14929920. Its totient is φ = 3843840.

The previous prime is 8166079. The next prime is 8166083. The reversal of 8166081 is 1806618.

8166081 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8166079) and next prime (8166083).

It is not a de Polignac number, because 8166081 - 2¹ = 8166079 is a prime.

It is a super-2 number, since 2×8166081² = 133369757797122, which contains 22 as substring.

8166081 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166083) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154051 + ... + 154103.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

Almost surely, 2^8166081 is an apocalyptic number.

It is an amenable number.

8166081 is a deficient number, since it is larger than the sum of its proper divisors (6763839).

8166081 is a wasteful number, since it uses less digits than its factorization.

8166081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 8166081 is about 2857.6355610889. The cubic root of 8166081 is about 201.3745398921.

The spelling of 8166081 in words is "eight million, one hundred sixty-six thousand, eighty-one".