3661321306 has 16 divisors (see below), whose sum is σ = 5550301440. Its totient is φ = 1811246800.

The previous prime is 3661321289. The next prime is 3661321333. The reversal of 3661321306 is 6031231663.

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, 318975 + ... + 330253.

It is an arithmetic number, because the mean of its divisors is an integer number (346893840).

Almost surely, 2^3661321306 is an apocalyptic number.

3661321306 is a deficient number, since it is larger than the sum of its proper divisors (1888980134).

3661321306 is a wasteful number, since it uses less digits than its factorization.

3661321306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12989.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3661321306 is about 60508.8531208451. The cubic root of 3661321306 is about 1541.2719723928.

Adding to 3661321306 its reverse (6031231663), we get a palindrome (9692552969).

The spelling of 3661321306 in words is "three billion, six hundred sixty-one million, three hundred twenty-one thousand, three hundred six".