3667667 has 4 divisors (see below), whose sum is σ = 3705576. Its totient is φ = 3629760.

The previous prime is 3667637. The next prime is 3667669. The reversal of 3667667 is 7667663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7667663 = 17 ⋅451039.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3667667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3667669) 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, 18809 + ... + 19002.

It is an arithmetic number, because the mean of its divisors is an integer number (926394).

Almost surely, 2^3667667 is an apocalyptic number.

3667667 is a deficient number, since it is larger than the sum of its proper divisors (37909).

3667667 is an equidigital number, since it uses as much as digits as its factorization.

3667667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37908.

The product of its digits is 190512, while the sum is 41.

The square root of 3667667 is about 1915.1154012226. The cubic root of 3667667 is about 154.2161887493.

It can be divided in two parts, 3667 and 667, that added together give a palindrome (4334).

The spelling of 3667667 in words is "three million, six hundred sixty-seven thousand, six hundred sixty-seven".