3405505785 has 32 divisors (see below), whose sum is σ = 5947361280. Its totient is φ = 1650264000.

The previous prime is 3405505771. The next prime is 3405505811. The reversal of 3405505785 is 5875055043.

It is not a de Polignac number, because 3405505785 - 2⁷ = 3405505657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383526 + ... + 392304.

It is an arithmetic number, because the mean of its divisors is an integer number (185855040).

Almost surely, 2^3405505785 is an apocalyptic number.

It is an amenable number.

3405505785 is a deficient number, since it is larger than the sum of its proper divisors (2541855495).

3405505785 is a wasteful number, since it uses less digits than its factorization.

3405505785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149.

The product of its (nonzero) digits is 420000, while the sum is 42.

The square root of 3405505785 is about 58356.7115677366. The cubic root of 3405505785 is about 1504.5058270183.

The spelling of 3405505785 in words is "three billion, four hundred five million, five hundred five thousand, seven hundred eighty-five".