3667997 has 2 divisors, whose sum is σ = 3667998. Its totient is φ = 3667996.

The previous prime is 3667987. The next prime is 3667999. The reversal of 3667997 is 7997663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3644281 + 23716 = 1909^2 + 154^2 .

It is an emirp because it is prime and its reverse (7997663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3667997 - 2⁴ = 3667981 is a prime.

Together with 3667999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3667999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833998 + 1833999.

It is an arithmetic number, because the mean of its divisors is an integer number (1833999).

Almost surely, 2^3667997 is an apocalyptic number.

It is an amenable number.

3667997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3667997 is an equidigital number, since it uses as much as digits as its factorization.

3667997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 47.

The square root of 3667997 is about 1915.2015559726. The cubic root of 3667997 is about 154.2208138344.

It can be divided in two parts, 3667 and 997, that added together give a palindrome (4664).

The spelling of 3667997 in words is "three million, six hundred sixty-seven thousand, nine hundred ninety-seven".