33648009 has 4 divisors (see below), whose sum is σ = 44864016. Its totient is φ = 22432004.

The previous prime is 33648007. The next prime is 33648019. The reversal of 33648009 is 90084633.

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: 90084633 = 3 ⋅30028211.

It is a cyclic number.

It is not a de Polignac number, because 33648009 - 2¹ = 33648007 is a prime.

It is a super-2 number, since 2×33648009² = 2264377019328162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33648007) 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, 5607999 + ... + 5608004.

It is an arithmetic number, because the mean of its divisors is an integer number (11216004).

Almost surely, 2^33648009 is an apocalyptic number.

It is an amenable number.

33648009 is a deficient number, since it is larger than the sum of its proper divisors (11216007).

33648009 is a wasteful number, since it uses less digits than its factorization.

33648009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216006.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 33648009 is about 5800.6903899450. The cubic root of 33648009 is about 322.8393447464.

The spelling of 33648009 in words is "thirty-three million, six hundred forty-eight thousand, nine".