8166501 has 24 divisors (see below), whose sum is σ = 13983424. Its totient is φ = 4665600.

The previous prime is 8166469. The next prime is 8166553. The reversal of 8166501 is 1056618.

8166501 is a `hidden beast` number, since 8 + 1 + 6 + 650 + 1 = 666.

It is not a de Polignac number, because 8166501 - 2⁵ = 8166469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166581) 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 23 ways as a sum of consecutive naturals, for example, 700 + ... + 4101.

Almost surely, 2^8166501 is an apocalyptic number.

8166501 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

8166501 is a deficient number, since it is larger than the sum of its proper divisors (5816923).

8166501 is an equidigital number, since it uses as much as digits as its factorization.

8166501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4811 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 8166501 is about 2857.7090474714. The cubic root of 8166501 is about 201.3779922155.

The spelling of 8166501 in words is "eight million, one hundred sixty-six thousand, five hundred one".