33373661 has 4 divisors (see below), whose sum is σ = 33393792. Its totient is φ = 33353532.

The previous prime is 33373657. The next prime is 33373673. The reversal of 33373661 is 16637333.

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: 16637333 = 977 ⋅17029.

It is a cyclic number.

It is not a de Polignac number, because 33373661 - 2² = 33373657 is a prime.

It is a super-2 number, since 2×33373661² = 2227602497085842, 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 (33373651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7331 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (8348448).

Almost surely, 2^33373661 is an apocalyptic number.

It is an amenable number.

33373661 is a deficient number, since it is larger than the sum of its proper divisors (20131).

33373661 is a wasteful number, since it uses less digits than its factorization.

33373661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130.

The product of its digits is 20412, while the sum is 32.

The square root of 33373661 is about 5776.9941145894. The cubic root of 33373661 is about 321.9595290108.

The spelling of 33373661 in words is "thirty-three million, three hundred seventy-three thousand, six hundred sixty-one".