353663 has 4 divisors (see below), whose sum is σ = 358008. Its totient is φ = 349320.

The previous prime is 353657. The next prime is 353677. The reversal of 353663 is 366353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366353 = 13 ⋅28181.

It is a cyclic number.

It is not a de Polignac number, because 353663 - 2¹² = 349567 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (89502).

2³⁵³⁶⁶³ is an apocalyptic number.

353663 is a deficient number, since it is larger than the sum of its proper divisors (4345).

353663 is an equidigital number, since it uses as much as digits as its factorization.

353663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344.

The product of its digits is 4860, while the sum is 26.

The square root of 353663 is about 594.6957205160. The cubic root of 353663 is about 70.7179846574.

The spelling of 353663 in words is "three hundred fifty-three thousand, six hundred sixty-three".