3640041 has 6 divisors (see below), whose sum is σ = 5257850. Its totient is φ = 2426688.

The previous prime is 3640037. The next prime is 3640061. The reversal of 3640041 is 1400463.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 1390041 = 1500^2 + 1179^2 .

It is not a de Polignac number, because 3640041 - 2² = 3640037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3639996 and 3640023.

It is not an unprimeable number, because it can be changed into a prime (3640031) 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 5 ways as a sum of consecutive naturals, for example, 202216 + ... + 202233.

Almost surely, 2^3640041 is an apocalyptic number.

It is an amenable number.

3640041 is a deficient number, since it is larger than the sum of its proper divisors (1617809).

3640041 is a wasteful number, since it uses less digits than its factorization.

3640041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404455 (or 404452 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3640041 is about 1907.8891477232. The cubic root of 3640041 is about 153.8280111747.

The spelling of 3640041 in words is "three million, six hundred forty thousand, forty-one".