33990673 has 4 divisors (see below), whose sum is σ = 34002928. Its totient is φ = 33978420.

The previous prime is 33990653. The next prime is 33990689. The reversal of 33990673 is 37609933.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37609933 = 17 ⋅2212349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33990673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33990653) 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, 238 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (8500732).

Almost surely, 2^33990673 is an apocalyptic number.

It is an amenable number.

33990673 is a deficient number, since it is larger than the sum of its proper divisors (12255).

33990673 is an equidigital number, since it uses as much as digits as its factorization.

33990673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12254.

The product of its (nonzero) digits is 91854, while the sum is 40.

The square root of 33990673 is about 5830.1520563361. The cubic root of 33990673 is about 323.9315540271.

The spelling of 33990673 in words is "thirty-three million, nine hundred ninety thousand, six hundred seventy-three".