3649071 has 8 divisors (see below), whose sum is σ = 4878720. Its totient is φ = 2426072.

The previous prime is 3649057. The next prime is 3649097. The reversal of 3649071 is 1709463.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3649071 - 2⁷ = 3648943 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (609840).

Almost surely, 2^3649071 is an apocalyptic number.

3649071 is a deficient number, since it is larger than the sum of its proper divisors (1229649).

3649071 is a wasteful number, since it uses less digits than its factorization.

3649071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3649071 is about 1910.2541715698. The cubic root of 3649071 is about 153.9551086334.

The spelling of 3649071 in words is "three million, six hundred forty-nine thousand, seventy-one".