353645 has 4 divisors (see below), whose sum is σ = 424380. Its totient is φ = 282912.

The previous prime is 353641. The next prime is 353653. The reversal of 353645 is 546353.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 175561 + 178084 = 419^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 353645 - 2² = 353641 is a prime.

It is a super-3 number, since 3×353645³ = 132685608761433375, which contains 333 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 353645.

It is not an unprimeable number, because it can be changed into a prime (353641) 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 3 ways as a sum of consecutive naturals, for example, 35360 + ... + 35369.

It is an arithmetic number, because the mean of its divisors is an integer number (106095).

2³⁵³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

353645 is a deficient number, since it is larger than the sum of its proper divisors (70735).

353645 is an equidigital number, since it uses as much as digits as its factorization.

353645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70734.

The product of its digits is 5400, while the sum is 26.

The square root of 353645 is about 594.6805865336. The cubic root of 353645 is about 70.7167848850.

Adding to 353645 its reverse (546353), we get a palindrome (899998).

The spelling of 353645 in words is "three hundred fifty-three thousand, six hundred forty-five".