33890061 has 8 divisors (see below), whose sum is σ = 47844864. Its totient is φ = 21264320.

The previous prime is 33890033. The next prime is 33890117. The reversal of 33890061 is 16009833.

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 33890061 - 2⁵ = 33890029 is a prime.

It is a super-2 number, since 2×33890061² = 2297072469167442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33890011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332205 + ... + 332306.

It is an arithmetic number, because the mean of its divisors is an integer number (5980608).

Almost surely, 2^33890061 is an apocalyptic number.

It is an amenable number.

33890061 is a deficient number, since it is larger than the sum of its proper divisors (13954803).

33890061 is a wasteful number, since it uses less digits than its factorization.

33890061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664531.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 33890061 is about 5821.5170703177. The cubic root of 33890061 is about 323.6116269379.

Adding to 33890061 its reverse (16009833), we get a palindrome (49899894).

The spelling of 33890061 in words is "thirty-three million, eight hundred ninety thousand, sixty-one".