3641621224 has 8 divisors (see below), whose sum is σ = 6828039810. Its totient is φ = 1820810608.

The previous prime is 3641621213. The next prime is 3641621227. The reversal of 3641621224 is 4221261463.

It can be written as a sum of positive squares in only one way, i.e., 2008653124 + 1632968100 = 44818^2 + 40410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3641621224² = 26522810278174516352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3641621227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227601319 + ... + 227601334.

Almost surely, 2^3641621224 is an apocalyptic number.

It is an amenable number.

3641621224 is a deficient number, since it is larger than the sum of its proper divisors (3186418586).

3641621224 is a wasteful number, since it uses less digits than its factorization.

3641621224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455202659 (or 455202655 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 3641621224 is about 60345.8467833537. The cubic root of 3641621224 is about 1538.5026802541.

Adding to 3641621224 its reverse (4221261463), we get a palindrome (7862882687).

The spelling of 3641621224 in words is "three billion, six hundred forty-one million, six hundred twenty-one thousand, two hundred twenty-four".