3644992 has 42 divisors (see below), whose sum is σ = 7855458. Its totient is φ = 1677312.

The previous prime is 3644983. The next prime is 3644999. The reversal of 3644992 is 2994463.

3644992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 50176 + 3594816 = 224^2 + 1896^2 .

It is not an unprimeable number, because it can be changed into a prime (3644999) 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 5 ways as a sum of consecutive naturals, for example, 10648 + ... + 10984.

Almost surely, 2^3644992 is an apocalyptic number.

3644992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3927729).

3644992 is an abundant number, since it is smaller than the sum of its proper divisors (4210466).

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

3644992 is a wasteful number, since it uses less digits than its factorization.

3644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 352 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 3644992 is about 1909.1862140713. The cubic root of 3644992 is about 153.8977226098.

It can be divided in two parts, 364 and 4992, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 3644992 in words is "three million, six hundred forty-four thousand, nine hundred ninety-two".