2640033 has 20 divisors (see below), whose sum is σ = 4303728. Its totient is φ = 1599480.

The previous prime is 2640023. The next prime is 2640041. The reversal of 2640033 is 3300462.

It is not a de Polignac number, because 2640033 - 2⁴ = 2640017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2639988 and 2640015.

It is not an unprimeable number, because it can be changed into a prime (2640013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 591 + ... + 2372.

2^2640033 is an apocalyptic number.

It is an amenable number.

2640033 is a deficient number, since it is larger than the sum of its proper divisors (1663695).

2640033 is a wasteful number, since it uses less digits than its factorization.

2640033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 2640033 is about 1624.8178359435. The cubic root of 2640033 is about 138.2090404664.

Adding to 2640033 its reverse (3300462), we get a palindrome (5940495).

The spelling of 2640033 in words is "two million, six hundred forty thousand, thirty-three".