3649633 has 8 divisors (see below), whose sum is σ = 4005288. Its totient is φ = 3304704.

The previous prime is 3649609. The next prime is 3649637. The reversal of 3649633 is 3369463.

3649633 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 4 ways, for example, as 786769 + 2862864 = 887^2 + 1692^2 .

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

It is not a de Polignac number, because 3649633 - 2⁵ = 3649601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649637) 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 7 ways as a sum of consecutive naturals, for example, 1960 + ... + 3337.

It is an arithmetic number, because the mean of its divisors is an integer number (500661).

Almost surely, 2^3649633 is an apocalyptic number.

It is an amenable number.

3649633 is a deficient number, since it is larger than the sum of its proper divisors (355655).

3649633 is a wasteful number, since it uses less digits than its factorization.

3649633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363.

The product of its digits is 34992, while the sum is 34.

The square root of 3649633 is about 1910.4012667500. The cubic root of 3649633 is about 153.9630118623.

It can be divided in two parts, 3 and 649633, that added together give a square (649636 = 806²).

The spelling of 3649633 in words is "three million, six hundred forty-nine thousand, six hundred thirty-three".