3666212320 has 48 divisors (see below), whose sum is σ = 8675181648. Its totient is φ = 1464156160.

The previous prime is 3666212311. The next prime is 3666212353. The reversal of 3666212320 is 232126663.

It is a happy number.

It is a super-2 number, since 2×3666212320² = 26882225550639564800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 84687 + ... + 120433.

It is an arithmetic number, because the mean of its divisors is an integer number (180732951).

Almost surely, 2^3666212320 is an apocalyptic number.

It is an amenable number.

3666212320 is an abundant number, since it is smaller than the sum of its proper divisors (5008969328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3666212320 is a wasteful number, since it uses less digits than its factorization.

3666212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36403 (or 36395 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 3666212320 is about 60549.2553215975. The cubic root of 3666212320 is about 1541.9579750598.

Adding to 3666212320 its reverse (232126663), we get a palindrome (3898338983).

The spelling of 3666212320 in words is "three billion, six hundred sixty-six million, two hundred twelve thousand, three hundred twenty".