33640413 has 4 divisors (see below), whose sum is σ = 44853888. Its totient is φ = 22426940.

The previous prime is 33640379. The next prime is 33640417. The reversal of 33640413 is 31404633.

33640413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 33640413 - 2⁶ = 33640349 is a prime.

It is a super-2 number, since 2×33640413² = 2263354773621138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33640417) 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 3 ways as a sum of consecutive naturals, for example, 5606733 + ... + 5606738.

It is an arithmetic number, because the mean of its divisors is an integer number (11213472).

Almost surely, 2^33640413 is an apocalyptic number.

It is an amenable number.

33640413 is a deficient number, since it is larger than the sum of its proper divisors (11213475).

33640413 is a wasteful number, since it uses less digits than its factorization.

33640413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213474.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 33640413 is about 5800.0356033390. The cubic root of 33640413 is about 322.8150493791.

The spelling of 33640413 in words is "thirty-three million, six hundred forty thousand, four hundred thirteen".