3866665340 has 24 divisors (see below), whose sum is σ = 8381933952. Its totient is φ = 1496773440.

The previous prime is 3866665339. The next prime is 3866665343. The reversal of 3866665340 is 435666683.

It is a super-2 number, since 2×3866665340² = 29902201703114631200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866665343) by changing a digit.

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, 3117659 + ... + 3118898.

It is an arithmetic number, because the mean of its divisors is an integer number (349247248).

Almost surely, 2^3866665340 is an apocalyptic number.

It is an amenable number.

3866665340 is an abundant number, since it is smaller than the sum of its proper divisors (4515268612).

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

3866665340 is a wasteful number, since it uses less digits than its factorization.

3866665340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236597 (or 6236595 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The square root of 3866665340 is about 62182.5163530715. The cubic root of 3866665340 is about 1569.5633957087.

The spelling of 3866665340 in words is "three billion, eight hundred sixty-six million, six hundred sixty-five thousand, three hundred forty".