383643 has 16 divisors (see below), whose sum is σ = 612640. Its totient is φ = 235872.

The previous prime is 383633. The next prime is 383651. The reversal of 383643 is 346383.

It is not a de Polignac number, because 383643 - 2⁴ = 383627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196 + ... + 897.

It is an arithmetic number, because the mean of its divisors is an integer number (38290).

2³⁸³⁶⁴³ is an apocalyptic number.

383643 is a deficient number, since it is larger than the sum of its proper divisors (228997).

383643 is a wasteful number, since it uses less digits than its factorization.

383643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1109 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 383643 is about 619.3892152758. The cubic root of 383643 is about 72.6622920053.

The spelling of 383643 in words is "three hundred eighty-three thousand, six hundred forty-three".