3668421 has 8 divisors (see below), whose sum is σ = 4940064. Its totient is φ = 2421200.

The previous prime is 3668419. The next prime is 3668461. The reversal of 3668421 is 1248663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3668421 - 2¹ = 3668419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5751 + ... + 6356.

It is an arithmetic number, because the mean of its divisors is an integer number (617508).

Almost surely, 2^3668421 is an apocalyptic number.

It is an amenable number.

3668421 is a deficient number, since it is larger than the sum of its proper divisors (1271643).

3668421 is a wasteful number, since it uses less digits than its factorization.

3668421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211.

The product of its digits is 6912, while the sum is 30.

The square root of 3668421 is about 1915.3122460842. The cubic root of 3668421 is about 154.2267559608.

The spelling of 3668421 in words is "three million, six hundred sixty-eight thousand, four hundred twenty-one".