3688121 has 8 divisors (see below), whose sum is σ = 3791424. Its totient is φ = 3586320.

The previous prime is 3688117. The next prime is 3688127. The reversal of 3688121 is 1218863.

3688121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3688121 - 2² = 3688117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5990 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^3688121 is an apocalyptic number.

It is an amenable number.

3688121 is a deficient number, since it is larger than the sum of its proper divisors (103303).

3688121 is a wasteful number, since it uses less digits than its factorization.

3688121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751.

The product of its digits is 2304, while the sum is 29.

The square root of 3688121 is about 1920.4481247875. The cubic root of 3688121 is about 154.5023372534.

The spelling of 3688121 in words is "three million, six hundred eighty-eight thousand, one hundred twenty-one".