3667018666687 has 4 divisors (see below), whose sum is σ = 3667022497600. Its totient is φ = 3667014835776.

The previous prime is 3667018666679. The next prime is 3667018666693. The reversal of 3667018666687 is 7866668107663.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3667018666687 - 2³ = 3667018666679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3667018666627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891439 + ... + 2851087.

It is an arithmetic number, because the mean of its divisors is an integer number (916755624400).

Almost surely, 2^{3667018666687} is an apocalyptic number.

3667018666687 is a deficient number, since it is larger than the sum of its proper divisors (3830913).

3667018666687 is a wasteful number, since it uses less digits than its factorization.

3667018666687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830912.

The product of its (nonzero) digits is 438939648, while the sum is 70.

The spelling of 3667018666687 in words is "three trillion, six hundred sixty-seven billion, eighteen million, six hundred sixty-six thousand, six hundred eighty-seven".