3405655 has 16 divisors (see below), whose sum is σ = 4694400. Its totient is φ = 2345760.

The previous prime is 3405653. The next prime is 3405671. The reversal of 3405655 is 5565043.

It is not a de Polignac number, because 3405655 - 2¹ = 3405653 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 585 + ... + 2674.

It is an arithmetic number, because the mean of its divisors is an integer number (293400).

Almost surely, 2^3405655 is an apocalyptic number.

3405655 is a deficient number, since it is larger than the sum of its proper divisors (1288745).

3405655 is a wasteful number, since it uses less digits than its factorization.

3405655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 3405655 is about 1845.4416815494. The cubic root of 3405655 is about 150.4527800412.

It can be divided in two parts, 34056 and 55, that multiplied together give a triangular number (1873080 = T₁₉₃₅).

The spelling of 3405655 in words is "three million, four hundred five thousand, six hundred fifty-five".