3644557 has 8 divisors (see below), whose sum is σ = 4346496. Its totient is φ = 2987952.

The previous prime is 3644513. The next prime is 3644569. The reversal of 3644557 is 7554463.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3644557 - 2¹⁵ = 3611789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644587) by changing a digit.

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, 11158 + ... + 11479.

It is an arithmetic number, because the mean of its divisors is an integer number (543312).

Almost surely, 2^3644557 is an apocalyptic number.

It is an amenable number.

3644557 is a deficient number, since it is larger than the sum of its proper divisors (701939).

3644557 is a wasteful number, since it uses less digits than its factorization.

3644557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22667.

The product of its digits is 50400, while the sum is 34.

The square root of 3644557 is about 1909.0722877880. The cubic root of 3644557 is about 153.8916002212.

The spelling of 3644557 in words is "three million, six hundred forty-four thousand, five hundred fifty-seven".