3644136 has 32 divisors (see below), whose sum is σ = 10123200. Its totient is φ = 1214640.

The previous prime is 3644129. The next prime is 3644149. The reversal of 3644136 is 6314463.

3644136 is a `hidden beast` number, since 3 + 644 + 13 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8220 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (316350).

Almost surely, 2^3644136 is an apocalyptic number.

3644136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3644136 is an abundant number, since it is smaller than the sum of its proper divisors (6479064).

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

3644136 is a wasteful number, since it uses less digits than its factorization.

3644136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16886 (or 16876 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 3644136 is about 1908.9620216233. The cubic root of 3644136 is about 153.8856744110.

Adding to 3644136 its reverse (6314463), we get a palindrome (9958599).

The spelling of 3644136 in words is "three million, six hundred forty-four thousand, one hundred thirty-six".