158663 has 2 divisors, whose sum is σ = 158664. Its totient is φ = 158662.

The previous prime is 158657. The next prime is 158699. The reversal of 158663 is 366851.

It is a weak prime.

It is an emirp because it is prime and its reverse (366851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158663 - 2⁴ = 158647 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158633) by changing a digit.

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 as a sum of consecutive naturals, namely, 79331 + 79332.

It is an arithmetic number, because the mean of its divisors is an integer number (79332).

2¹⁵⁸⁶⁶³ is an apocalyptic number.

158663 is a deficient number, since it is larger than the sum of its proper divisors (1).

158663 is an equidigital number, since it uses as much as digits as its factorization.

158663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 158663 is about 398.3252439904. The cubic root of 158663 is about 54.1367134855.

The spelling of 158663 in words is "one hundred fifty-eight thousand, six hundred sixty-three".