3406656 has 56 divisors (see below), whose sum is σ = 9838944. Its totient is φ = 1031680.

The previous prime is 3406631. The next prime is 3406661. The reversal of 3406656 is 6566043.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306 + ... + 2918.

Almost surely, 2^3406656 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 3406656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4919472).

3406656 is an abundant number, since it is smaller than the sum of its proper divisors (6432288).

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

3406656 is a wasteful number, since it uses less digits than its factorization.

3406656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639 (or 1629 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 3406656 is about 1845.7128704108. The cubic root of 3406656 is about 150.4675191031.

It can be divided in two parts, 340 and 6656, that added together give a palindrome (6996).

The spelling of 3406656 in words is "three million, four hundred six thousand, six hundred fifty-six".