3605420 has 72 divisors (see below), whose sum is σ = 9518544. Its totient is φ = 1137024.

The previous prime is 3605419. The next prime is 3605443. The reversal of 3605420 is 245063.

3605420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3605392 and 3605401.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 12599 + ... + 12881.

It is an arithmetic number, because the mean of its divisors is an integer number (132202).

Almost surely, 2^3605420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3605420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4759272).

3605420 is an abundant number, since it is smaller than the sum of its proper divisors (5913124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3605420 is a wasteful number, since it uses less digits than its factorization.

3605420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3605420 is about 1898.7943543207. The cubic root of 3605420 is about 153.3387626727.

The spelling of 3605420 in words is "three million, six hundred five thousand, four hundred twenty".