3641421 has 16 divisors (see below), whose sum is σ = 5644800. Its totient is φ = 2044848.

The previous prime is 3641401. The next prime is 3641423. The reversal of 3641421 is 1241463.

3641421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3641421 - 2⁵ = 3641389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641423) 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 15 ways as a sum of consecutive naturals, for example, 231 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^3641421 is an apocalyptic number.

It is an amenable number.

3641421 is a deficient number, since it is larger than the sum of its proper divisors (2003379).

3641421 is a wasteful number, since it uses less digits than its factorization.

3641421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008.

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

The square root of 3641421 is about 1908.2507696841. The cubic root of 3641421 is about 153.8474483032.

Adding to 3641421 its reverse (1241463), we get a palindrome (4882884).

The spelling of 3641421 in words is "three million, six hundred forty-one thousand, four hundred twenty-one".