158697 has 24 divisors (see below), whose sum is σ = 287040. Its totient is φ = 82080.

The previous prime is 158663. The next prime is 158699. The reversal of 158697 is 796851.

It is not a de Polignac number, because 158697 - 2⁶ = 158633 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158697.

It is not an unprimeable number, because it can be changed into a prime (158699) 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 23 ways as a sum of consecutive naturals, for example, 579 + ... + 807.

It is an arithmetic number, because the mean of its divisors is an integer number (11960).

2¹⁵⁸⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

158697 is a deficient number, since it is larger than the sum of its proper divisors (128343).

158697 is a wasteful number, since it uses less digits than its factorization.

158697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 158697 is about 398.3679203952. The cubic root of 158697 is about 54.1405802068.

It can be divided in two parts, 15869 and 7, that added together give a square (15876 = 126²).

The spelling of 158697 in words is "one hundred fifty-eight thousand, six hundred ninety-seven".