33680065 has 16 divisors (see below), whose sum is σ = 43585920. Its totient is φ = 24900480.

The previous prime is 33680047. The next prime is 33680081. The reversal of 33680065 is 56008633.

It is not a de Polignac number, because 33680065 - 2⁹ = 33679553 is a prime.

It is a super-2 number, since 2×33680065² = 2268693556808450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429 + ... + 8218.

It is an arithmetic number, because the mean of its divisors is an integer number (2724120).

Almost surely, 2^33680065 is an apocalyptic number.

It is an amenable number.

33680065 is a deficient number, since it is larger than the sum of its proper divisors (9905855).

33680065 is a wasteful number, since it uses less digits than its factorization.

33680065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8712.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 33680065 is about 5803.4528515359. The cubic root of 33680065 is about 322.9418337559.

Adding to 33680065 its reverse (56008633), we get a palindrome (89688698).

The spelling of 33680065 in words is "thirty-three million, six hundred eighty thousand, sixty-five".