33085621 has 8 divisors (see below), whose sum is σ = 35693784. Its totient is φ = 30551040.

The previous prime is 33085601. The next prime is 33085687. The reversal of 33085621 is 12658033.

It can be written as a sum of positive squares in 4 ways, for example, as 2283121 + 30802500 = 1511^2 + 5550^2 .

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

It is not a de Polignac number, because 33085621 - 2⁵ = 33085589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33085621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33085601) 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, 17460 + ... + 19261.

It is an arithmetic number, because the mean of its divisors is an integer number (4461723).

Almost surely, 2^33085621 is an apocalyptic number.

It is an amenable number.

33085621 is a deficient number, since it is larger than the sum of its proper divisors (2608163).

33085621 is a wasteful number, since it uses less digits than its factorization.

33085621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36791.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 33085621 is about 5752.0101703665. The cubic root of 33085621 is about 321.0305997880.

The spelling of 33085621 in words is "thirty-three million, eighty-five thousand, six hundred twenty-one".