166268005 has 8 divisors (see below), whose sum is σ = 202792824. Its totient is φ = 130833600.

The previous prime is 166267979. The next prime is 166268009. The reversal of 166268005 is 500862661.

It can be written as a sum of positive squares in 4 ways, for example, as 12769 + 166255236 = 113^2 + 12894^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166268005 - 2¹⁷ = 166136933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166268009) 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 7 ways as a sum of consecutive naturals, for example, 272266 + ... + 272875.

It is an arithmetic number, because the mean of its divisors is an integer number (25349103).

Almost surely, 2^166268005 is an apocalyptic number.

It is an amenable number.

166268005 is a deficient number, since it is larger than the sum of its proper divisors (36524819).

166268005 is an equidigital number, since it uses as much as digits as its factorization.

166268005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545207.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 166268005 is about 12894.4951432772. The cubic root of 166268005 is about 549.8820738907.

The spelling of 166268005 in words is "one hundred sixty-six million, two hundred sixty-eight thousand, five".