3366756561 has 16 divisors (see below), whose sum is σ = 5144061824. Its totient is φ = 1918698624.

The previous prime is 3366756557. The next prime is 3366756587. The reversal of 3366756561 is 1656576633.

It is a happy number.

It is not a de Polignac number, because 3366756561 - 2² = 3366756557 is a prime.

It is a super-2 number, since 2×3366756561² = 22670099482073093442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3366756561.

It is not an unprimeable number, because it can be changed into a prime (3366756061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207076 + ... + 222741.

It is an arithmetic number, because the mean of its divisors is an integer number (321503864).

Almost surely, 2^3366756561 is an apocalyptic number.

It is an amenable number.

3366756561 is a deficient number, since it is larger than the sum of its proper divisors (1777305263).

3366756561 is a wasteful number, since it uses less digits than its factorization.

3366756561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430200.

The product of its digits is 2041200, while the sum is 48.

The square root of 3366756561 is about 58023.7585907704. The cubic root of 3366756561 is about 1498.7777541250. Note that the first 4 decimals are identical.

The spelling of 3366756561 in words is "three billion, three hundred sixty-six million, seven hundred fifty-six thousand, five hundred sixty-one".