3649747 has 4 divisors (see below), whose sum is σ = 3864456. Its totient is φ = 3435040.

The previous prime is 3649741. The next prime is 3649753. The reversal of 3649747 is 7479463.

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

It is an interprime number because it is at equal distance from previous prime (3649741) and next prime (3649753).

It is a cyclic number.

It is not a de Polignac number, because 3649747 - 2¹⁹ = 3125459 is a prime.

It is a Duffinian number.

3649747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3649741) by changing a digit.

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, 107329 + ... + 107362.

It is an arithmetic number, because the mean of its divisors is an integer number (966114).

Almost surely, 2^3649747 is an apocalyptic number.

3649747 is a deficient number, since it is larger than the sum of its proper divisors (214709).

3649747 is a wasteful number, since it uses less digits than its factorization.

3649747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214708.

The product of its digits is 127008, while the sum is 40.

The square root of 3649747 is about 1910.4311031806. The cubic root of 3649747 is about 153.9646149094.

The spelling of 3649747 in words is "three million, six hundred forty-nine thousand, seven hundred forty-seven".