3649355 has 4 divisors (see below), whose sum is σ = 4379232. Its totient is φ = 2919480.

The previous prime is 3649337. The next prime is 3649357. The reversal of 3649355 is 5539463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5539463 = 673 ⋅8231.

It is not a de Polignac number, because 3649355 - 2¹⁶ = 3583819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364931 + ... + 364940.

It is an arithmetic number, because the mean of its divisors is an integer number (1094808).

Almost surely, 2^3649355 is an apocalyptic number.

3649355 is a deficient number, since it is larger than the sum of its proper divisors (729877).

3649355 is an equidigital number, since it uses as much as digits as its factorization.

3649355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729876.

The product of its digits is 48600, while the sum is 35.

The square root of 3649355 is about 1910.3285057811. The cubic root of 3649355 is about 153.9591025373.

It can be divided in two parts, 3649 and 355, that added together give a palindrome (4004).

The spelling of 3649355 in words is "three million, six hundred forty-nine thousand, three hundred fifty-five".