385603 has 4 divisors (see below), whose sum is σ = 388080. Its totient is φ = 383128.

The previous prime is 385597. The next prime is 385607. The reversal of 385603 is 306583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306583 = 211 ⋅1453.

It is a cyclic number.

It is not a de Polignac number, because 385603 - 2⁵ = 385571 is a prime.

It is a Duffinian number.

385603 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (385607) 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, 988 + ... + 1321.

It is an arithmetic number, because the mean of its divisors is an integer number (97020).

2³⁸⁵⁶⁰³ is an apocalyptic number.

385603 is a deficient number, since it is larger than the sum of its proper divisors (2477).

385603 is a wasteful number, since it uses less digits than its factorization.

385603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 385603 is about 620.9694034331. The cubic root of 385603 is about 72.7858237300.

The spelling of 385603 in words is "three hundred eighty-five thousand, six hundred three".