3660388985 has 8 divisors (see below), whose sum is σ = 4791782016. Its totient is φ = 2662101040.

The previous prime is 3660388943. The next prime is 3660389003. The reversal of 3660388985 is 5898830663.

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

It is not a de Polignac number, because 3660388985 - 2¹⁴ = 3660372601 is a prime.

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 3660388985.

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 7 ways as a sum of consecutive naturals, for example, 33276209 + ... + 33276318.

It is an arithmetic number, because the mean of its divisors is an integer number (598972752).

Almost surely, 2^3660388985 is an apocalyptic number.

It is an amenable number.

3660388985 is a deficient number, since it is larger than the sum of its proper divisors (1131393031).

3660388985 is a wasteful number, since it uses less digits than its factorization.

3660388985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66552543.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The square root of 3660388985 is about 60501.1486254600. The cubic root of 3660388985 is about 1541.1411378213.

The spelling of 3660388985 in words is "three billion, six hundred sixty million, three hundred eighty-eight thousand, nine hundred eighty-five".