156680 has 16 divisors (see below), whose sum is σ = 352620. Its totient is φ = 62656.

The previous prime is 156679. The next prime is 156683. The reversal of 156680 is 86651.

It can be written as a sum of positive squares in 2 ways, for example, as 155236 + 1444 = 394^2 + 38^2 .

It is not an unprimeable number, because it can be changed into a prime (156683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919 + ... + 1998.

2¹⁵⁶⁶⁸⁰ is an apocalyptic number.

156680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156680 is an abundant number, since it is smaller than the sum of its proper divisors (195940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156680 is a wasteful number, since it uses less digits than its factorization.

156680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 156680 is about 395.8282455813. The cubic root of 156680 is about 53.9102303649.

The spelling of 156680 in words is "one hundred fifty-six thousand, six hundred eighty".