3665208345 has 16 divisors (see below), whose sum is σ = 6022829760. Its totient is φ = 1901945664.

The previous prime is 3665208317. The next prime is 3665208359. The reversal of 3665208345 is 5438025663.

3665208345 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3665208345 - 2¹⁹ = 3664684057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3665208297 and 3665208306.

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, 3301435 + ... + 3302544.

It is an arithmetic number, because the mean of its divisors is an integer number (376426860).

Almost surely, 2^3665208345 is an apocalyptic number.

It is an amenable number.

3665208345 is a deficient number, since it is larger than the sum of its proper divisors (2357621415).

3665208345 is a wasteful number, since it uses less digits than its factorization.

3665208345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604024.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 3665208345 is about 60540.9641895469. The cubic root of 3665208345 is about 1541.8172095634.

The spelling of 3665208345 in words is "three billion, six hundred sixty-five million, two hundred eight thousand, three hundred forty-five".