3644235 has 48 divisors (see below), whose sum is σ = 7547904. Its totient is φ = 1590336.

The previous prime is 3644231. The next prime is 3644237. The reversal of 3644235 is 5324463.

It is not a de Polignac number, because 3644235 - 2² = 3644231 is a prime.

It is a d-powerful number, because it can be written as 3³ + 6⁸ + 4³ + 4⁵ + 2¹³ + 3⁷ + 5⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 3644199 and 3644208.

It is not an unprimeable number, because it can be changed into a prime (3644231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6994 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

Almost surely, 2^3644235 is an apocalyptic number.

3644235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3644235 is an abundant number, since it is smaller than the sum of its proper divisors (3903669).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644235 is a wasteful number, since it uses less digits than its factorization.

3644235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 541 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 3644235 is about 1908.9879517692. The cubic root of 3644235 is about 153.8870679324.

Adding to 3644235 its reverse (5324463), we get a palindrome (8968698).

The spelling of 3644235 in words is "three million, six hundred forty-four thousand, two hundred thirty-five".