8166465 has 24 divisors (see below), whose sum is σ = 14250600. Its totient is φ = 4326144.

The previous prime is 8166461. The next prime is 8166469. The reversal of 8166465 is 5646618.

8166465 is a `hidden beast` number, since 8 + 1 + 6 + 646 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (8166461) and next prime (8166469).

It can be written as a sum of positive squares in 4 ways, for example, as 4198401 + 3968064 = 2049^2 + 1992^2 .

It is not a de Polignac number, because 8166465 - 2² = 8166461 is a prime.

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 a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8166461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7261 + ... + 8309.

It is an arithmetic number, because the mean of its divisors is an integer number (593775).

Almost surely, 2^8166465 is an apocalyptic number.

It is an amenable number.

8166465 is a deficient number, since it is larger than the sum of its proper divisors (6084135).

8166465 is a wasteful number, since it uses less digits than its factorization.

8166465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1230 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 8166465 is about 2857.7027487127. The cubic root of 8166465 is about 201.3776963067.

The spelling of 8166465 in words is "eight million, one hundred sixty-six thousand, four hundred sixty-five".