3887799666 has 96 divisors (see below), whose sum is σ = 8477326080. Its totient is φ = 1188096000.

The previous prime is 3887799659. The next prime is 3887799667. The reversal of 3887799666 is 6669977883.

It is a super-2 number, since 2×3887799666² = 30229972485899423112, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3887799666.

It is not an unprimeable number, because it can be changed into a prime (3887799667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13835446 + ... + 13835726.

It is an arithmetic number, because the mean of its divisors is an integer number (88305480).

Almost surely, 2^3887799666 is an apocalyptic number.

3887799666 is an abundant number, since it is smaller than the sum of its proper divisors (4589526414).

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

3887799666 is a wasteful number, since it uses less digits than its factorization.

3887799666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 483 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The square root of 3887799666 is about 62352.2226227742. Note that the first 3 decimals coincide. The cubic root of 3887799666 is about 1572.4178286743.

The spelling of 3887799666 in words is "three billion, eight hundred eighty-seven million, seven hundred ninety-nine thousand, six hundred sixty-six".