158966 has 8 divisors (see below), whose sum is σ = 242544. Its totient is φ = 78120.

The previous prime is 158959. The next prime is 158981. The reversal of 158966 is 669851.

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

It is a congruent number.

It is an unprimeable number.

158966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 530 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (30318).

2¹⁵⁸⁹⁶⁶ is an apocalyptic number.

158966 is a deficient number, since it is larger than the sum of its proper divisors (83578).

158966 is a wasteful number, since it uses less digits than its factorization.

158966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its digits is 12960, while the sum is 35.

The square root of 158966 is about 398.7054050298. The cubic root of 158966 is about 54.1711533430.

It can be divided in two parts, 158 and 966, that multiplied together give a triangular number (152628 = T₅₅₂).

The spelling of 158966 in words is "one hundred fifty-eight thousand, nine hundred sixty-six".