3667663 has 4 divisors (see below), whose sum is σ = 3690328. Its totient is φ = 3645000.

The previous prime is 3667637. The next prime is 3667669.

3667663 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3667663 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 (3667669) 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 3 ways as a sum of consecutive naturals, for example, 11088 + ... + 11413.

It is an arithmetic number, because the mean of its divisors is an integer number (922582).

Almost surely, 2^3667663 is an apocalyptic number.

3667663 is a deficient number, since it is larger than the sum of its proper divisors (22665).

3667663 is a wasteful number, since it uses less digits than its factorization.

3667663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22664.

The product of its digits is 81648, while the sum is 37.

The square root of 3667663 is about 1915.1143568988. The cubic root of 3667663 is about 154.2161326860.

The spelling of 3667663 in words is "three million, six hundred sixty-seven thousand, six hundred sixty-three".