3649105 has 4 divisors (see below), whose sum is σ = 4378932. Its totient is φ = 2919280.

The previous prime is 3649097. The next prime is 3649133. The reversal of 3649105 is 5019463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1752976 + 1896129 = 1324^2 + 1377^2 .

It is not a de Polignac number, because 3649105 - 2³ = 3649097 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 364906 + ... + 364915.

It is an arithmetic number, because the mean of its divisors is an integer number (1094733).

Almost surely, 2^3649105 is an apocalyptic number.

It is an amenable number.

3649105 is a deficient number, since it is larger than the sum of its proper divisors (729827).

3649105 is an equidigital number, since it uses as much as digits as its factorization.

3649105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729826.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 3649105 is about 1910.2630708884. The cubic root of 3649105 is about 153.9555867878.

It can be divided in two parts, 36 and 49105, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 3649105 in words is "three million, six hundred forty-nine thousand, one hundred five".