3420056661 has 16 divisors (see below), whose sum is σ = 5322399744. Its totient is φ = 1912736304.

The previous prime is 3420056659. The next prime is 3420056669. The reversal of 3420056661 is 1666500243.

It is not a de Polignac number, because 3420056661 - 2¹ = 3420056659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420056669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1731565 + ... + 1733538.

It is an arithmetic number, because the mean of its divisors is an integer number (332649984).

Almost surely, 2^3420056661 is an apocalyptic number.

It is an amenable number.

3420056661 is a deficient number, since it is larger than the sum of its proper divisors (1902343083).

3420056661 is a wasteful number, since it uses less digits than its factorization.

3420056661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465160.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 3420056661 is about 58481.2505081757. The cubic root of 3420056661 is about 1506.6455749640.

The spelling of 3420056661 in words is "three billion, four hundred twenty million, fifty-six thousand, six hundred sixty-one".