3987653667 has 8 divisors (see below), whose sum is σ = 5335660224. Its totient is φ = 2649041448.

The previous prime is 3987653653. The next prime is 3987653731. The reversal of 3987653667 is 7663567893.

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

It is not a de Polignac number, because 3987653667 - 2¹⁵ = 3987620899 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3987653667.

It is not an unprimeable number, because it can be changed into a prime (3987653647) 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, 2347593 + ... + 2349290.

It is an arithmetic number, because the mean of its divisors is an integer number (666957528).

Almost surely, 2^3987653667 is an apocalyptic number.

3987653667 is a deficient number, since it is larger than the sum of its proper divisors (1348006557).

3987653667 is a wasteful number, since it uses less digits than its factorization.

3987653667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697169.

The product of its digits is 34292160, while the sum is 60.

The square root of 3987653667 is about 63147.8714368109. The cubic root of 3987653667 is about 1585.7661535633.

The spelling of 3987653667 in words is "three billion, nine hundred eighty-seven million, six hundred fifty-three thousand, six hundred sixty-seven".