156745 has 16 divisors (see below), whose sum is σ = 207360. Its totient is φ = 113344.

The previous prime is 156733. The next prime is 156749. The reversal of 156745 is 547651.

It is not a de Polignac number, because 156745 - 2¹⁷ = 25673 is a prime.

156745 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (156749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3312 + ... + 3358.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2¹⁵⁶⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

156745 is a deficient number, since it is larger than the sum of its proper divisors (50615).

156745 is a wasteful number, since it uses less digits than its factorization.

156745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104.

The product of its digits is 4200, while the sum is 28.

The square root of 156745 is about 395.9103433860. The cubic root of 156745 is about 53.9176843699.

The spelling of 156745 in words is "one hundred fifty-six thousand, seven hundred forty-five".