156644 has 6 divisors (see below), whose sum is σ = 274134. Its totient is φ = 78320.

The previous prime is 156641. The next prime is 156659. The reversal of 156644 is 446651.

It is a happy number.

156644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 25600 = 362^2 + 160^2 .

It is a plaindrome in base 9.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (156641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19577 + ... + 19584.

It is an arithmetic number, because the mean of its divisors is an integer number (45689).

2¹⁵⁶⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

156644 is a deficient number, since it is larger than the sum of its proper divisors (117490).

156644 is a wasteful number, since it uses less digits than its factorization.

156644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39165 (or 39163 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 156644 is about 395.7827687002. The cubic root of 156644 is about 53.9061011058.

The spelling of 156644 in words is "one hundred fifty-six thousand, six hundred forty-four".