33868513 has 8 divisors (see below), whose sum is σ = 38848832. Its totient is φ = 28923696.

The previous prime is 33868493. The next prime is 33868531. The reversal of 33868513 is 31586833.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33868513 - 2⁹ = 33868001 is a prime.

It is a super-2 number, since 2×33868513² = 2294152345662338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33868543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6795 + ... + 10672.

It is an arithmetic number, because the mean of its divisors is an integer number (4856104).

Almost surely, 2^33868513 is an apocalyptic number.

It is an amenable number.

33868513 is a deficient number, since it is larger than the sum of its proper divisors (4980319).

33868513 is a wasteful number, since it uses less digits than its factorization.

33868513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17751.

The product of its digits is 51840, while the sum is 37.

The square root of 33868513 is about 5819.6660557114. Note that the first 3 decimals coincide. The cubic root of 33868513 is about 323.5430260801.

The spelling of 33868513 in words is "thirty-three million, eight hundred sixty-eight thousand, five hundred thirteen".