8161066 has 4 divisors (see below), whose sum is σ = 12241602. Its totient is φ = 4080532.

The previous prime is 8161063. The next prime is 8161073. The reversal of 8161066 is 6601618.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7102225 + 1058841 = 2665^2 + 1029^2 .

It is not an unprimeable number, because it can be changed into a prime (8161063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040265 + ... + 2040268.

Almost surely, 2^8161066 is an apocalyptic number.

8161066 is a deficient number, since it is larger than the sum of its proper divisors (4080536).

8161066 is a wasteful number, since it uses less digits than its factorization.

8161066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080535.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 8161066 is about 2856.7579526449. The cubic root of 8161066 is about 201.3333083588. Note that the first 4 decimals are identical.

The spelling of 8161066 in words is "eight million, one hundred sixty-one thousand, sixty-six".