33366421 has 8 divisors (see below), whose sum is σ = 36453600. Its totient is φ = 30288240.

The previous prime is 33366407. The next prime is 33366457. The reversal of 33366421 is 12466333.

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 33366421 - 2⁹ = 33365909 is a prime.

It is a super-2 number, since 2×33366421² = 2226636100698482, which contains 22 as substring.

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 33366421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33367421) 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, 7290 + ... + 10948.

It is an arithmetic number, because the mean of its divisors is an integer number (4556700).

Almost surely, 2^33366421 is an apocalyptic number.

It is an amenable number.

33366421 is a deficient number, since it is larger than the sum of its proper divisors (3087179).

33366421 is a wasteful number, since it uses less digits than its factorization.

33366421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499.

The product of its digits is 7776, while the sum is 28.

The square root of 33366421 is about 5776.3674571481. The cubic root of 33366421 is about 321.9362456240.

The spelling of 33366421 in words is "thirty-three million, three hundred sixty-six thousand, four hundred twenty-one".