3604385 has 4 divisors (see below), whose sum is σ = 4325268. Its totient is φ = 2883504.

The previous prime is 3604373. The next prime is 3604417. The reversal of 3604385 is 5834063.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1437601 + 2166784 = 1199^2 + 1472^2 .

It is a cyclic number.

It is not a de Polignac number, because 3604385 - 2¹⁰ = 3603361 is a prime.

It is a d-powerful number, because it can be written as 3² + 6⁵ + 0 + 4⁷ + 3¹³ + 8⁵ + 5⁹ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360434 + ... + 360443.

It is an arithmetic number, because the mean of its divisors is an integer number (1081317).

Almost surely, 2^3604385 is an apocalyptic number.

It is an amenable number.

3604385 is a deficient number, since it is larger than the sum of its proper divisors (720883).

3604385 is an equidigital number, since it uses as much as digits as its factorization.

3604385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720882.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3604385 is about 1898.5217933961. The cubic root of 3604385 is about 153.3240883945.

The spelling of 3604385 in words is "three million, six hundred four thousand, three hundred eighty-five".