153645 has 8 divisors (see below), whose sum is σ = 245856. Its totient is φ = 81936.

The previous prime is 153641. The next prime is 153649. The reversal of 153645 is 546351.

It is an interprime number because it is at equal distance from previous prime (153641) and next prime (153649).

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

It is not a de Polignac number, because 153645 - 2² = 153641 is a prime.

It is a super-3 number, since 3×153645³ = 10881193916433375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5107 + ... + 5136.

It is an arithmetic number, because the mean of its divisors is an integer number (30732).

2¹⁵³⁶⁴⁵ is an apocalyptic number.

153645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

153645 is a deficient number, since it is larger than the sum of its proper divisors (92211).

153645 is a wasteful number, since it uses less digits than its factorization.

153645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10251.

The product of its digits is 1800, while the sum is 24.

The square root of 153645 is about 391.9757645569. The cubic root of 153645 is about 53.5598654408.

Adding to 153645 its reverse (546351), we get a palindrome (699996).

The spelling of 153645 in words is "one hundred fifty-three thousand, six hundred forty-five".