3405656 has 32 divisors (see below), whose sum is σ = 6773760. Its totient is φ = 1601952.

The previous prime is 3405653. The next prime is 3405671. The reversal of 3405656 is 6565043.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15161 + ... + 15383.

It is an arithmetic number, because the mean of its divisors is an integer number (211680).

Almost surely, 2^3405656 is an apocalyptic number.

It is an amenable number.

3405656 is a deficient number, since it is larger than the sum of its proper divisors (3368104).

3405656 is a wasteful number, since it uses less digits than its factorization.

3405656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3405656 is about 1845.4419524873. The cubic root of 3405656 is about 150.4527947670.

The spelling of 3405656 in words is "three million, four hundred five thousand, six hundred fifty-six".