3666240666 has 48 divisors (see below), whose sum is σ = 8807748768. Its totient is φ = 1092765600.

The previous prime is 3666240661. The next prime is 3666240667. The reversal of 3666240666 is 6660426663.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3666240661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139696 + ... + 163851.

It is an arithmetic number, because the mean of its divisors is an integer number (183494766).

Almost surely, 2^3666240666 is an apocalyptic number.

3666240666 is an abundant number, since it is smaller than the sum of its proper divisors (5141508102).

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

3666240666 is a wasteful number, since it uses less digits than its factorization.

3666240666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303627 (or 303624 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 45.

The square root of 3666240666 is about 60549.4893950395. The cubic root of 3666240666 is about 1541.9619490275.

The spelling of 3666240666 in words is "three billion, six hundred sixty-six million, two hundred forty thousand, six hundred sixty-six".