385633 has 4 divisors (see below), whose sum is σ = 387328. Its totient is φ = 383940.

The previous prime is 385631. The next prime is 385639. The reversal of 385633 is 336583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 385633 - 2¹ = 385631 is a prime.

It is a Duffinian number.

385633 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (385631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441 + ... + 982.

It is an arithmetic number, because the mean of its divisors is an integer number (96832).

2³⁸⁵⁶³³ is an apocalyptic number.

It is an amenable number.

385633 is a deficient number, since it is larger than the sum of its proper divisors (1695).

385633 is a wasteful number, since it uses less digits than its factorization.

385633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694.

The product of its digits is 6480, while the sum is 28.

The square root of 385633 is about 620.9935587428. The cubic root of 385633 is about 72.7877112655.

It can be divided in two parts, 38 and 5633, that added together give a triangular number (5671 = T₁₀₆).

The spelling of 385633 in words is "three hundred eighty-five thousand, six hundred thirty-three".