166279005 has 12 divisors (see below), whose sum is σ = 288217020. Its totient is φ = 88682112.

The previous prime is 166278991. The next prime is 166279021. The reversal of 166279005 is 500972661.

It can be written as a sum of positive squares in 2 ways, for example, as 63824121 + 102454884 = 7989^2 + 10122^2 .

It is not a de Polignac number, because 166279005 - 2⁷ = 166278877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1847500 + ... + 1847589.

It is an arithmetic number, because the mean of its divisors is an integer number (24018085).

Almost surely, 2^166279005 is an apocalyptic number.

166279005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166279005 is a deficient number, since it is larger than the sum of its proper divisors (121938015).

166279005 is a wasteful number, since it uses less digits than its factorization.

166279005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695100 (or 3695097 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 166279005 is about 12894.9216748300. The cubic root of 166279005 is about 549.8942000349.

The spelling of 166279005 in words is "one hundred sixty-six million, two hundred seventy-nine thousand, five".