158669 has 8 divisors (see below), whose sum is σ = 191040. Its totient is φ = 128736.

The previous prime is 158663. The next prime is 158699. The reversal of 158669 is 966851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158669 - 2¹² = 154573 is a prime.

It is a super-2 number, since 2×158669² = 50351703122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158663) 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 in 7 ways as a sum of consecutive naturals, for example, 464 + ... + 729.

It is an arithmetic number, because the mean of its divisors is an integer number (23880).

2¹⁵⁸⁶⁶⁹ is an apocalyptic number.

158669 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

158669 is a deficient number, since it is larger than the sum of its proper divisors (32371).

158669 is a wasteful number, since it uses less digits than its factorization.

158669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its digits is 12960, while the sum is 35.

The square root of 158669 is about 398.3327754529. The cubic root of 158669 is about 54.1373958882.

The spelling of 158669 in words is "one hundred fifty-eight thousand, six hundred sixty-nine".