3650661605 has 16 divisors (see below), whose sum is σ = 4416989184. Its totient is φ = 2896440960.

The previous prime is 3650661527. The next prime is 3650661643. The reversal of 3650661605 is 5061660563.

It is not a de Polignac number, because 3650661605 - 2²⁰ = 3649613029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1005824 + ... + 1009446.

It is an arithmetic number, because the mean of its divisors is an integer number (276061824).

Almost surely, 2^3650661605 is an apocalyptic number.

It is an amenable number.

3650661605 is a deficient number, since it is larger than the sum of its proper divisors (766327579).

3650661605 is a wasteful number, since it uses less digits than its factorization.

3650661605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5236.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 3650661605 is about 60420.7051018109. The cubic root of 3650661605 is about 1539.7747470903.

The spelling of 3650661605 in words is "three billion, six hundred fifty million, six hundred sixty-one thousand, six hundred five".