3664121 has 4 divisors (see below), whose sum is σ = 3790500. Its totient is φ = 3537744.

The previous prime is 3664117. The next prime is 3664139. The reversal of 3664121 is 1214663.

It is a happy number.

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 3024121 + 640000 = 1739^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 3664121 - 2² = 3664117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3664421) 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, 63146 + ... + 63203.

It is an arithmetic number, because the mean of its divisors is an integer number (947625).

Almost surely, 2^3664121 is an apocalyptic number.

It is an amenable number.

3664121 is a deficient number, since it is larger than the sum of its proper divisors (126379).

3664121 is a wasteful number, since it uses less digits than its factorization.

3664121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126378.

The product of its digits is 864, while the sum is 23.

The square root of 3664121 is about 1914.1893845699. The cubic root of 3664121 is about 154.1664725913.

Adding to 3664121 its reverse (1214663), we get a palindrome (4878784).

It can be divided in two parts, 3664 and 121, that multiplied together give a palindrome (443344).

The spelling of 3664121 in words is "three million, six hundred sixty-four thousand, one hundred twenty-one".