3640033 has 4 divisors (see below), whose sum is σ = 3674160. Its totient is φ = 3605908.

The previous prime is 3640031. The next prime is 3640037. The reversal of 3640033 is 3300463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3300463 = 419 ⋅7877.

It is a cyclic number.

It is not a de Polignac number, because 3640033 - 2¹ = 3640031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16903 + ... + 17116.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^3640033 is an apocalyptic number.

It is an amenable number.

3640033 is a deficient number, since it is larger than the sum of its proper divisors (34127).

3640033 is a wasteful number, since it uses less digits than its factorization.

3640033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34126.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 3640033 is about 1907.8870511642. The cubic root of 3640033 is about 153.8278984813.

Adding to 3640033 its reverse (3300463), we get a palindrome (6940496).

The spelling of 3640033 in words is "three million, six hundred forty thousand, thirty-three".