3871676665 has 16 divisors (see below), whose sum is σ = 4718854800. Its totient is φ = 3049085952.

The previous prime is 3871676663. The next prime is 3871676689. The reversal of 3871676665 is 5666761783.

It can be written as a sum of positive squares in 8 ways, for example, as 339038569 + 3532638096 = 18413^2 + 59436^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871676665 - 2¹ = 3871676663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3871676663) 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 15 ways as a sum of consecutive naturals, for example, 82909 + ... + 120901.

It is an arithmetic number, because the mean of its divisors is an integer number (294928425).

Almost surely, 2^3871676665 is an apocalyptic number.

It is an amenable number.

3871676665 is a deficient number, since it is larger than the sum of its proper divisors (847178135).

3871676665 is a wasteful number, since it uses less digits than its factorization.

3871676665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38316.

The product of its digits is 7620480, while the sum is 55.

The square root of 3871676665 is about 62222.7985950487. The cubic root of 3871676665 is about 1570.2411715195.

The spelling of 3871676665 in words is "three billion, eight hundred seventy-one million, six hundred seventy-six thousand, six hundred sixty-five".