3668669 has 4 divisors (see below), whose sum is σ = 3709980. Its totient is φ = 3627360.

The previous prime is 3668647. The next prime is 3668671. The reversal of 3668669 is 9668663.

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

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 3020644 = 805^2 + 1738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3668669 is a prime.

It is a super-2 number, since 2×3668669² = 26918264463122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668629) 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, 20522 + ... + 20699.

It is an arithmetic number, because the mean of its divisors is an integer number (927495).

Almost surely, 2^3668669 is an apocalyptic number.

It is an amenable number.

3668669 is a deficient number, since it is larger than the sum of its proper divisors (41311).

3668669 is an equidigital number, since it uses as much as digits as its factorization.

3668669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41310.

The product of its digits is 279936, while the sum is 44.

The square root of 3668669 is about 1915.3769863920. The cubic root of 3668669 is about 154.2302313320.

The spelling of 3668669 in words is "three million, six hundred sixty-eight thousand, six hundred sixty-nine".