161266 has 8 divisors (see below), whose sum is σ = 276480. Its totient is φ = 69108.

The previous prime is 161263. The next prime is 161267. The reversal of 161266 is 662161.

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

It is not an unprimeable number, because it can be changed into a prime (161263) 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 3 ways as a sum of consecutive naturals, for example, 5746 + ... + 5773.

It is an arithmetic number, because the mean of its divisors is an integer number (34560).

2¹⁶¹²⁶⁶ is an apocalyptic number.

161266 is a deficient number, since it is larger than the sum of its proper divisors (115214).

161266 is a wasteful number, since it uses less digits than its factorization.

161266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11528.

The product of its digits is 432, while the sum is 22.

The square root of 161266 is about 401.5793819409. The cubic root of 161266 is about 54.4311618607.

The spelling of 161266 in words is "one hundred sixty-one thousand, two hundred sixty-six".