3330781665 has 16 divisors (see below), whose sum is σ = 5442640128. Its totient is φ = 1738620416.

The previous prime is 3330781651. The next prime is 3330781687. The reversal of 3330781665 is 5661870333.

3330781665 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3330781665 - 2¹⁷ = 3330650593 is a prime.

It is a super-2 number, since 2×3330781665² = 22188212999800344450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2361552 + ... + 2362961.

It is an arithmetic number, because the mean of its divisors is an integer number (340165008).

Almost surely, 2^3330781665 is an apocalyptic number.

It is an amenable number.

3330781665 is a deficient number, since it is larger than the sum of its proper divisors (2111858463).

3330781665 is a wasteful number, since it uses less digits than its factorization.

3330781665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724568.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 3330781665 is about 57712.9245923303. The cubic root of 3330781665 is about 1493.4203162634.

The spelling of 3330781665 in words is "three billion, three hundred thirty million, seven hundred eighty-one thousand, six hundred sixty-five".