3649578 has 16 divisors (see below), whose sum is σ = 7320000. Its totient is φ = 1213056.

The previous prime is 3649567. The next prime is 3649579. The reversal of 3649578 is 8759463.

It is a happy number.

3649578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 3² + 6⁸ + 4 + 9 + 5⁹ + 7⁵ + 8 .

It is not an unprimeable number, because it can be changed into a prime (3649579) 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, 2298 + ... + 3546.

It is an arithmetic number, because the mean of its divisors is an integer number (457500).

Almost surely, 2^3649578 is an apocalyptic number.

3649578 is an abundant number, since it is smaller than the sum of its proper divisors (3670422).

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

3649578 is a wasteful number, since it uses less digits than its factorization.

3649578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741.

The product of its digits is 181440, while the sum is 42.

The square root of 3649578 is about 1910.3868718142. The cubic root of 3649578 is about 153.9622384504.

The spelling of 3649578 in words is "three million, six hundred forty-nine thousand, five hundred seventy-eight".