3876784066 has 4 divisors (see below), whose sum is σ = 5815176102. Its totient is φ = 1938392032.

The previous prime is 3876784007. The next prime is 3876784097. The reversal of 3876784066 is 6604876783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6604876783 = 1171 ⋅5640373.

It can be written as a sum of positive squares in only one way, i.e., 3049358841 + 827425225 = 55221^2 + 28765^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3876783998 and 3876784016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969196015 + ... + 969196018.

Almost surely, 2^3876784066 is an apocalyptic number.

3876784066 is a deficient number, since it is larger than the sum of its proper divisors (1938392036).

3876784066 is a wasteful number, since it uses less digits than its factorization.

3876784066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938392035.

The product of its (nonzero) digits is 8128512, while the sum is 55.

The square root of 3876784066 is about 62263.8263038821. The cubic root of 3876784066 is about 1570.9313399821.

The spelling of 3876784066 in words is "three billion, eight hundred seventy-six million, seven hundred eighty-four thousand, sixty-six".