3649547 has 4 divisors (see below), whose sum is σ = 3981336. Its totient is φ = 3317760.

The previous prime is 3649531. The next prime is 3649549. The reversal of 3649547 is 7459463.

3649547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7459463 = 11 ⋅678133.

It is a cyclic number.

It is not a de Polignac number, because 3649547 - 2⁴ = 3649531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3649547.

It is not an unprimeable number, because it can be changed into a prime (3649549) 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 3 ways as a sum of consecutive naturals, for example, 165878 + ... + 165899.

It is an arithmetic number, because the mean of its divisors is an integer number (995334).

Almost surely, 2^3649547 is an apocalyptic number.

3649547 is a deficient number, since it is larger than the sum of its proper divisors (331789).

3649547 is a wasteful number, since it uses less digits than its factorization.

3649547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331788.

The product of its digits is 90720, while the sum is 38.

The square root of 3649547 is about 1910.3787582571. The cubic root of 3649547 is about 153.9618025240.

The spelling of 3649547 in words is "three million, six hundred forty-nine thousand, five hundred forty-seven".