3644121 has 32 divisors (see below), whose sum is σ = 5588352. Its totient is φ = 2096640.

The previous prime is 3644117. The next prime is 3644129. The reversal of 3644121 is 1214463.

It is not a de Polignac number, because 3644121 - 2² = 3644117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3644129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68731 + ... + 68783.

It is an arithmetic number, because the mean of its divisors is an integer number (174636).

Almost surely, 2^3644121 is an apocalyptic number.

It is an amenable number.

3644121 is a deficient number, since it is larger than the sum of its proper divisors (1944231).

3644121 is a wasteful number, since it uses less digits than its factorization.

3644121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153.

The product of its digits is 576, while the sum is 21.

The square root of 3644121 is about 1908.9580927826. The cubic root of 3644121 is about 153.8854632692.

Adding to 3644121 its reverse (1214463), we get a palindrome (4858584).

The spelling of 3644121 in words is "three million, six hundred forty-four thousand, one hundred twenty-one".