33606421 has 4 divisors (see below), whose sum is σ = 35375200. Its totient is φ = 31837644.

The previous prime is 33606413. The next prime is 33606479. The reversal of 33606421 is 12460633.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12460633 = 29 ⋅429677.

It is a cyclic number.

It is not a de Polignac number, because 33606421 - 2³ = 33606413 is a prime.

It is a super-2 number, since 2×33606421² = 2258783064858482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33606401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884361 + ... + 884398.

It is an arithmetic number, because the mean of its divisors is an integer number (8843800).

Almost surely, 2^33606421 is an apocalyptic number.

It is an amenable number.

33606421 is a deficient number, since it is larger than the sum of its proper divisors (1768779).

33606421 is a wasteful number, since it uses less digits than its factorization.

33606421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768778.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 33606421 is about 5797.1045358869. The cubic root of 33606421 is about 322.7062831047.

The spelling of 33606421 in words is "thirty-three million, six hundred six thousand, four hundred twenty-one".