363643 has 4 divisors (see below), whose sum is σ = 415600. Its totient is φ = 311688.

The previous prime is 363619. The next prime is 363659. The reversal of 363643 is 346363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346363 = 31 ⋅11173.

It is a cyclic number.

It is not a de Polignac number, because 363643 - 2⁵ = 363611 is a prime.

It is a Duffinian number.

363643 is a lucky number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (363683) 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, 25968 + ... + 25981.

It is an arithmetic number, because the mean of its divisors is an integer number (103900).

2³⁶³⁶⁴³ is an apocalyptic number.

363643 is a deficient number, since it is larger than the sum of its proper divisors (51957).

363643 is an equidigital number, since it uses as much as digits as its factorization.

363643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51956.

The product of its digits is 3888, while the sum is 25.

The square root of 363643 is about 603.0281917125. The cubic root of 363643 is about 71.3770197553.

The spelling of 363643 in words is "three hundred sixty-three thousand, six hundred forty-three".