166282565 has 8 divisors (see below), whose sum is σ = 199609080. Its totient is φ = 132979392.

The previous prime is 166282561. The next prime is 166282573. The reversal of 166282565 is 565282661.

It can be written as a sum of positive squares in 4 ways, for example, as 52519009 + 113763556 = 7247^2 + 10666^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 166282565 - 2² = 166282561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166282561) 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, 21431 + ... + 28139.

It is an arithmetic number, because the mean of its divisors is an integer number (24951135).

Almost surely, 2^166282565 is an apocalyptic number.

It is an amenable number.

166282565 is a deficient number, since it is larger than the sum of its proper divisors (33326515).

166282565 is an equidigital number, since it uses as much as digits as its factorization.

166282565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671.

The product of its digits is 172800, while the sum is 41.

The square root of 166282565 is about 12895.0597129288. The cubic root of 166282565 is about 549.8981243816.

The spelling of 166282565 in words is "one hundred sixty-six million, two hundred eighty-two thousand, five hundred sixty-five".