3640533 has 32 divisors (see below), whose sum is σ = 5846400. Its totient is φ = 1997568.

The previous prime is 3640523. The next prime is 3640537. The reversal of 3640533 is 3350463.

It is not a de Polignac number, because 3640533 - 2¹⁰ = 3639509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640537) 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 31 ways as a sum of consecutive naturals, for example, 191598 + ... + 191616.

It is an arithmetic number, because the mean of its divisors is an integer number (182700).

Almost surely, 2^3640533 is an apocalyptic number.

It is an amenable number.

3640533 is a deficient number, since it is larger than the sum of its proper divisors (2205867).

3640533 is a wasteful number, since it uses less digits than its factorization.

3640533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 3640533 is about 1908.0180816753. The cubic root of 3640533 is about 153.8349414970.

Adding to 3640533 its reverse (3350463), we get a palindrome (6990996).

The spelling of 3640533 in words is "three million, six hundred forty thousand, five hundred thirty-three".