3667987 has 2 divisors, whose sum is σ = 3667988. Its totient is φ = 3667986.

The previous prime is 3667981. The next prime is 3667997. The reversal of 3667987 is 7897663.

It is a weak prime.

It is an emirp because it is prime and its reverse (7897663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3667987 - 2¹¹ = 3665939 is a prime.

It is a pancake number, because a pancake can be divided into 3667987 parts by 2708 straight cuts.

It is not a weakly prime, because it can be changed into another prime (3667981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833993 + 1833994.

It is an arithmetic number, because the mean of its divisors is an integer number (1833994).

Almost surely, 2^3667987 is an apocalyptic number.

3667987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3667987 is an equidigital number, since it uses as much as digits as its factorization.

3667987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 46.

The square root of 3667987 is about 1915.1989452796. The cubic root of 3667987 is about 154.2206736844.

The spelling of 3667987 in words is "three million, six hundred sixty-seven thousand, nine hundred eighty-seven".