33621 has 8 divisors (see below), whose sum is σ = 51264. Its totient is φ = 19200.

The previous prime is 33619. The next prime is 33623. The reversal of 33621 is 12633.

It is an interprime number because it is at equal distance from previous prime (33619) and next prime (33623).

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

It is not a de Polignac number, because 33621 - 2¹ = 33619 is a prime.

It is a super-2 number, since 2×33621² = 2260743282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33621.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 33621.

It is not an unprimeable number, because it can be changed into a prime (33623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780 + ... + 821.

It is an arithmetic number, because the mean of its divisors is an integer number (6408).

2³³⁶²¹ is an apocalyptic number.

It is an amenable number.

33621 is a deficient number, since it is larger than the sum of its proper divisors (17643).

33621 is a wasteful number, since it uses less digits than its factorization.

33621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611.

The product of its digits is 108, while the sum is 15.

The square root of 33621 is about 183.3603010469. The cubic root of 33621 is about 32.2752941398.

It can be divided in two parts, 336 and 21, that multiplied together give a square (7056 = 84²).

The spelling of 33621 in words is "thirty-three thousand, six hundred twenty-one".