3420556 has 12 divisors (see below), whose sum is σ = 6021792. Its totient is φ = 1700048.

The previous prime is 3420533. The next prime is 3420563. The reversal of 3420556 is 6550243.

It is a self number, because there is not a number n which added to its sum of digits gives 3420556.

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, 1780 + ... + 3163.

It is an arithmetic number, because the mean of its divisors is an integer number (501816).

Almost surely, 2^3420556 is an apocalyptic number.

It is an amenable number.

3420556 is a deficient number, since it is larger than the sum of its proper divisors (2601236).

3420556 is a wasteful number, since it uses less digits than its factorization.

3420556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120 (or 5118 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 3420556 is about 1849.4745199651. The cubic root of 3420556 is about 150.6718896389.

Adding to 3420556 its reverse (6550243), we get a palindrome (9970799).

The spelling of 3420556 in words is "three million, four hundred twenty thousand, five hundred fifty-six".