3345641665 has 8 divisors (see below), whose sum is σ = 4054520808. Its totient is φ = 2650012800.

The previous prime is 3345641659. The next prime is 3345641687. The reversal of 3345641665 is 5661465433.

It can be written as a sum of positive squares in 4 ways, for example, as 459373489 + 2886268176 = 21433^2 + 53724^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3345641665 - 2⁹ = 3345641153 is a prime.

It is a super-2 number, since 2×3345641665² = 22386636301167944450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3312012 + ... + 3313021.

It is an arithmetic number, because the mean of its divisors is an integer number (506815101).

Almost surely, 2^3345641665 is an apocalyptic number.

It is an amenable number.

3345641665 is a deficient number, since it is larger than the sum of its proper divisors (708879143).

3345641665 is a wasteful number, since it uses less digits than its factorization.

3345641665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6625139.

The product of its digits is 777600, while the sum is 43.

The square root of 3345641665 is about 57841.5219803214. The cubic root of 3345641665 is about 1495.6379443133.

The spelling of 3345641665 in words is "three billion, three hundred forty-five million, six hundred forty-one thousand, six hundred sixty-five".