3666987858 has 8 divisors (see below), whose sum is σ = 7333975728. Its totient is φ = 1222329284.

The previous prime is 3666987829. The next prime is 3666987869. The reversal of 3666987858 is 8587896663.

It is a happy number.

3666987858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

3666987858 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305582316 + ... + 305582327.

It is an arithmetic number, because the mean of its divisors is an integer number (916746966).

Almost surely, 2^3666987858 is an apocalyptic number.

3666987858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3666987858 is a wasteful number, since it uses less digits than its factorization.

3666987858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611164648.

The product of its digits is 104509440, while the sum is 66.

The square root of 3666987858 is about 60555.6591740194. The cubic root of 3666987858 is about 1542.0666942308.

The spelling of 3666987858 in words is "three billion, six hundred sixty-six million, nine hundred eighty-seven thousand, eight hundred fifty-eight".