158864 has 10 divisors (see below), whose sum is σ = 307830. Its totient is φ = 79424.

The previous prime is 158863. The next prime is 158867. The reversal of 158864 is 468851.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 43264 = 340^2 + 208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 158864.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158864.

It is not an unprimeable number, because it can be changed into a prime (158863) 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 as a sum of consecutive naturals, namely, 4949 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (30783).

2¹⁵⁸⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

158864 is a deficient number, since it is larger than the sum of its proper divisors (148966).

158864 is an equidigital number, since it uses as much as digits as its factorization.

158864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937 (or 9931 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 158864 is about 398.5774705123. The cubic root of 158864 is about 54.1595646178.

The spelling of 158864 in words is "one hundred fifty-eight thousand, eight hundred sixty-four".