33421605 has 16 divisors (see below), whose sum is σ = 61113984. Its totient is φ = 15278400.

The previous prime is 33421579. The next prime is 33421613. The reversal of 33421605 is 50612433.

It is a happy number.

It is not a de Polignac number, because 33421605 - 2⁵ = 33421573 is a prime.

It is a super-2 number, since 2×33421605² = 2234007361552050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159046 + ... + 159255.

It is an arithmetic number, because the mean of its divisors is an integer number (3819624).

Almost surely, 2^33421605 is an apocalyptic number.

33421605 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33421605 is a deficient number, since it is larger than the sum of its proper divisors (27692379).

33421605 is a wasteful number, since it uses less digits than its factorization.

33421605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318316.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 33421605 is about 5781.1421881839. The cubic root of 33421605 is about 322.1136289944.

The spelling of 33421605 in words is "thirty-three million, four hundred twenty-one thousand, six hundred five".