153697 has 4 divisors (see below), whose sum is σ = 162756. Its totient is φ = 144640.

The previous prime is 153689. The next prime is 153701. The reversal of 153697 is 796351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796351 = 37 ⋅21523.

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 12321 = 376^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 153697 - 2³ = 153689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153607) 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 3 ways as a sum of consecutive naturals, for example, 4504 + ... + 4537.

It is an arithmetic number, because the mean of its divisors is an integer number (40689).

2¹⁵³⁶⁹⁷ is an apocalyptic number.

153697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

153697 is a deficient number, since it is larger than the sum of its proper divisors (9059).

153697 is an equidigital number, since it uses as much as digits as its factorization.

153697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058.

The product of its digits is 5670, while the sum is 31.

The square root of 153697 is about 392.0420895771. The cubic root of 153697 is about 53.5659070711.

It can be divided in two parts, 15369 and 7, that added together give a square (15376 = 124²).

The spelling of 153697 in words is "one hundred fifty-three thousand, six hundred ninety-seven".