156668 has 12 divisors (see below), whose sum is σ = 279720. Its totient is φ = 76752.

The previous prime is 156659. The next prime is 156671. The reversal of 156668 is 866651.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable 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, 158 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (23310).

2¹⁵⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

156668 is a deficient number, since it is larger than the sum of its proper divisors (123052).

156668 is a wasteful number, since it uses less digits than its factorization.

156668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 794 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 156668 is about 395.8130872015. The cubic root of 156668 is about 53.9088540155.

The spelling of 156668 in words is "one hundred fifty-six thousand, six hundred sixty-eight".